Pop3 server not connecting

My ipad refuses to connect with pop3.live.com - the server for incoming mail in Windows Live. This is the "latest" email system from Microsoft and they say it replaces all previous. the same account and settings work fine in my iPhone 3GS so I'm puzzled why they won't work in the iPad. Any ideas?

Have you tried deleting and trying again? Do you get any error messages?

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Dispatcher Running Server Not Connected

Hi,
I have the same problem on Windows 2003 Server EP6 WAS640 SR1 SP9
I have the WAS640 for ABAP with the Java Add In and the Enterprise Portal installed on top.
When I try to connect to the Portal through a browser I get the message:
Dispatcher Running Server Not Connected
In the JCMON I cannot start Server0 and I get the errors 1,2,3,4 and it tries to start and then goes to status STOPPED
Does anyone know the solution ?
My system was working, the last change I made was to authenticate users against an SAP system and then I did a reboot and now the J2EE won't start.
Any help is much appreciated.
Thanks,
Tomas.

some more info, this problem started after I configured the Portal to authenticate against the SAP system
In the portal system log for server.0.log there is the following info:
Caused by: com.sap.engine.services.security.exceptions.BaseSecurityException: Anonymous principal not configured
     at com.sap.engine.services.security.login.SecurityContext.setAnonymousPrincipal(SecurityContext.java:504)
     at com.sap.engine.services.security.SecurityServerFrame.start(SecurityServerFrame.java:150)
     ... 5 more
Caused by: com.sap.security.core.server.userstore.UserstoreException: Could not get user J2EE_GUEST
     at com.sap.security.core.server.userstore.UserContextUME.engineGetUserInfo(UserContextUME.java:187)
     at com.sap.engine.services.security.userstore.context.UserContext.getUserInfo(UserContext.java:87)
     at com.sap.engine.services.security.login.SecurityContext.setAnonymousPrincipal(SecurityContext.java:498)
     ... 6 more
Caused by: com.sap.security.api.NoSuchUserAccountException: USER_AUTH_FAILED: User account for logonid "J2EE_GUEST" not found!
     at com.sap.security.core.imp.AbstractUserAccount.<init>(AbstractUserAccount.java:334)
     at com.sap.security.core.imp.DBTextFileUserAccount.<init>(DBTextFileUserAccount.java:56)
     at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:339)
     at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:277)
     at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:371)
     at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:366)
     at com.sap.security.core.server.userstore.UserContextUME.engineGetUserInfo(UserContextUME.java:183)
     ... 8 more
#1.5#00A0D1BC74B6001E0000000C0000118C0003F7536153ADF0#1116362417365#/System/Server##com.sap.engine.core.service630.container.ServiceRunner#######SAPEngine_System_Thread[impl:5]_51##0#0#Error#1#/System/Server#Plain###Core service security failed. J2EE Engine cannot be started.#
#1.5#00A0D1BC74B6001E0000000E0000118C0003F7536153BD59#1116362417365#/System/Server##com.sap.engine.core.Framework#######SAPEngine_System_Thread[impl:5]_51##0#0#Fatal#1#com.sap.engine.core.Framework#Plain###Critical shutdown was invoked. Reason is: Core service security failed. J2EE Engine cannot be started.#
Is it possible to reset the configuration back to what it was, or back to a default configuration\like in EP5 ?
Thanks,
Tomas.

Dispatcher is running, but server not connected

Hello,
When I load the portal with the link http://sapbw:50000/irj/portal the page display this error
"Dispatcher is running, but server not connected"
In the log file defaultrace.trc is this details
#1.5#000F2097D58D004100000CC0000013C00003F973E869EFAE#1118701161401#com.sap.engine.services.servlets_jsp.Deploy#sap.com/webadmin#com.sap.engine.services.servlets_jsp.Deploy#J2EE_GUEST#18####23d60950dc5911d9bc08000f2097d58d#SAPEngine_Application_Thread[impl:3]_18##0#0#Error##Plain###Error occured in invoking event "valueUnbound()" on listener class com.sap.engine.webadmin.control.WebAdminClusterTreeGenerator. The http session is ApplicationSession[id=(sapbw_DBW_00)ID3830150DB20054430341437593419End]. The attribute is com.sap.engine.webadmin.TREE_GENERATOR. The error is: com.sap.engine.services.servlets_jsp.server.exceptions.WebIllegalStateException: Method removeAttribute() is called in an invalid session.
     at com.sap.engine.services.servlets_jsp.server.runtime.client.ApplicationSession.removeAttribute(ApplicationSession.java:640)
     at com.sap.engine.webadmin.control.WebAdminClusterTreeGenerator.valueUnbound(WebAdminClusterTreeGenerator.java:331)
     at com.sap.engine.services.servlets_jsp.server.runtime.context.WebEvents.sessionValueUnbound(WebEvents.java:410)
     at com.sap.engine.services.servlets_jsp.server.runtime.context.WebEvents.sessionValueUnbound(WebEvents.java:404)
     at com.sap.engine.services.servlets_jsp.server.runtime.client.ApplicationSession.invalidateSession(ApplicationSession.java:287)
     at com.sap.engine.services.servlets_jsp.server.runtime.client.ApplicationSession.validate(ApplicationSession.java:138)
     at com.sap.engine.services.servlets_jsp.server.runtime.client.ApplicationSession.removeAttribute(ApplicationSession.java:637)
Thanks very much for you help
Dayana

Hi Dayana,
This message occurs while the server is starting i.e starting the core services and delpoying the applications. From the above error message it is hard to
say what the problem is. Can you explain more on what is happening? Also generally it takes about 15 -25 minutes depends on the environment.
Also do you see any errors in the following log files
\usr\sap\XXX\JC00\work\std_server0.out ?
Regards
-Venkat Malempati

I can't retrieve email, server not connected, at work, on my ipad mini

I can't retrieve email, server not connected, at work, on my ipad mini

iOS: Unable to send or receive email
http://support.apple.com/kb/TS3899
Can’t Send Emails on iPad – Troubleshooting Steps
http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/
Setting up and troubleshooting Mail
http://www.apple.com/support/ipad/assistant/mail/
iPad Mail
http://www.apple.com/support/ipad/mail/
Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
Or this - Delete the account in Mail and then set it up again. Settings->Mail, Contacts, Calendars -> Accounts Tap on the Account, then on the red button that says Remove Account.
 Cheers, Tom

Dispatcher Running; Server Not connected - J2ee Pos installation problems

Hi,
Got problem with starting J2EE Engine.
The message in the browser:
Dispatcher Running; Server Not connected - J2ee Pos installation problems
Chked up in the log files:
RFCEngine Server startup stopped.
com.sap.mw.jco.JCo$Exception(129)-JCO_Error_Server_startup
version of rfc driver is invalid.
Any help
Thnx
Meesum

Hi Rohin,
Is it true that jdk must be > 1.4.
Because I came across many places where it is explicitly stated that WAS 620 supports only jdk 1.3. pls let me know
Thnx anyway
meesum

Dispatcher running but message server not connected

Hi Guys,
I installed SAP netweaver 7.01 trial version and using MaxDB as database server.
When I start the NSB using SAPMMC, the message server is running but the disp+work.EXE is not working properly. It sometimes shows the status 'Running but message server not connected' and sometimes 'Running but que standstill'. It would be a great help if you could guide me to the solution of this problem.
DEV_MS file:-
trc file: "dev_ms", trc level: 1, release: "701"
[Thr 2148] Sat May 14 18:02:00 2011
[Thr 2148] MsSSetTrcLog: trc logging active, max size = 20971520 bytes
systemid   560 (PC with Windows NT)
relno      7010
patchlevel 0
patchno    0
intno      20020600
make:      multithreaded, ASCII, optimized
pid        1484
[Thr 2148] ***LOG Q01=> MsSInit, MSStart (Msg Server 1 1484) [msxxserv.c   1853]
[Thr 2148] MsInitAclInfo: acl file F:\SAP\NSP\SYS\global\ms_acl_info.DAT not found, unrestricted access
[Thr 2148] MsGetOwnIpAddr: my host addresses are :
[Thr 2148]   1 : [10.10.0.10] DESKTOP5 (HOSTNAME)
[Thr 2148]   2 : [127.0.0.1] localhost (LOCALHOST)
[Thr 2148]   3 : [192.168.1.8] desktop5 (NILIST)
[Thr 2148] Sat May 14 18:02:01 2011
[Thr 2148] MsHttpInit: full qualified hostname = desktop5
[Thr 2148] HTTP logging is switch off
[Thr 2148] set HTTP state to LISTEN
[Thr 2148] ms/icf_info_server : deleted
[Thr 2148] *** I listen to port sapmsNSP (3600) ***
[Thr 2148] *** I listen to internal port 3900 (3900) ***
[Thr 2148] *** HTTP port 8100 state LISTEN ***
[Thr 2148] CUSTOMER KEY: >S1138463071<
[Thr 2148] build version=701.2008.03.06
[Thr 2148] Sat May 14 18:03:20 2011
[Thr 2148] *** ERROR => MsSClientHandle: no server provides service ENQ (4), requested from desktop5_NSP_00 [msxxserv.c   4711]

DEV_DISP file:-
trc file: "dev_disp", trc level: 1, release: "701"
sysno      00
sid        NSP
systemid   560 (PC with Windows NT)
relno      7010
patchlevel 0
patchno    7
intno      20020600
make:      multithreaded, ASCII, optimized
pid        2740
Sat May 14 18:02:02 2011
kernel runs with dp version 240(ext=110) (@(#) DPLIB-INT-VERSION-240)
length of sys_adm_ext is 364 bytes
SWITCH TRC-HIDE on ***
***LOG Q00=> DpSapEnvInit, DPStart (00 2740) [dpxxdisp.c   1257]
     shared lib "dw_xml.dll" version 7 successfully loaded
     shared lib "dw_xtc.dll" version 7 successfully loaded
     shared lib "dw_stl.dll" version 7 successfully loaded
     shared lib "dw_gui.dll" version 7 successfully loaded
     shared lib "dw_mdm.dll" version 7 successfully loaded
rdisp/softcancel_sequence : -> 0,5,-1
use internal message server connection to port 3900
Sat May 14 18:02:11 2011
WARNING => DpNetCheck: NiAddrToHost(1.0.0.0) took 9 seconds
***LOG GZZ=> 1 possible network problems detected - check tracefile and adjust the DNS settings [dpxxtool2.c 5529]
MtxInit: 30000 0 0
DpSysAdmExtInit: ABAP is active
DpSysAdmExtInit: VMC (JAVA VM in WP) is not active
DpIPCInit2: start server >desktop5_NSP_00                         <
DpShMCreate: sizeof(wp_adm)          8232     (1176)
DpShMCreate: sizeof(tm_adm)          3786880     (18840)
DpShMCreate: sizeof(wp_ca_adm)          1280     (60)
DpShMCreate: sizeof(appc_ca_adm)     1200     (60)
DpCommTableSize: max/headSize/ftSize/tableSize=500/8/528040/528048
DpShMCreate: sizeof(comm_adm)          528048     (1048)
DpSlockTableSize: max/headSize/ftSize/fiSize/tableSize=0/0/0/0/0
DpShMCreate: sizeof(slock_adm)          0     (96)
DpFileTableSize: max/headSize/ftSize/tableSize=0/0/0/0
DpShMCreate: sizeof(file_adm)          0     (72)
DpShMCreate: sizeof(vmc_adm)          0     (1296)
DpShMCreate: sizeof(wall_adm)          (22440/34344/56/100)
DpShMCreate: sizeof(gw_adm)     48
DpShMCreate: SHM_DP_ADM_KEY          (addr: 057F0040, size: 4389744)
DpShMCreate: allocated sys_adm at 057F0040
DpShMCreate: allocated wp_adm at 057F1BF8
DpShMCreate: allocated tm_adm_list at 057F3C20
DpShMCreate: allocated tm_adm at 057F3C50
DpShMCreate: allocated wp_ca_adm at 05B904D0
DpShMCreate: allocated appc_ca_adm at 05B909D0
DpShMCreate: allocated comm_adm at 05B90E80
DpShMCreate: system runs without slock table
DpShMCreate: system runs without file table
DpShMCreate: allocated vmc_adm_list at 05C11D30
DpShMCreate: allocated gw_adm at 05C11D70
DpShMCreate: system runs without vmc_adm
DpShMCreate: allocated ca_info at 05C11DA0
DpShMCreate: allocated wall_adm at 05C11DA8
MBUF state OFF
DpCommInitTable: init table for 500 entries
rdisp/queue_size_check_value : -> off
Sat May 14 18:02:12 2011
ThTaskStatus: rdisp/reset_online_during_debug 0
EmInit: MmSetImplementation( 2 ).
MM global diagnostic options set: 0
<ES> client 0 initializing ....
<ES> InitFreeList
<ES> block size is 1024 kByte.
Using implementation view
<EsNT> Using memory model view.
<EsNT> Memory Reset disabled as NT default
<ES> 127 blocks reserved for free list.
ES initialized.
rdisp/http_min_wait_dia_wp : 1 -> 1
Sat May 14 18:02:13 2011
***LOG Q0K=> DpMsAttach, mscon ( desktop5) [dpxxdisp.c   12204]
DpStartStopMsg: send start message (myname is >desktop5_NSP_00                         <)
DpStartStopMsg: start msg sent
CCMS: alert/MONI_SEGM_SIZE = 0   monitoring and alerting switched off.
DpMsgAdmin: Set release to 7010, patchlevel 0
MBUF state PREPARED
MBUF component UP
DpMBufHwIdSet: set Hardware-ID
***LOG Q1C=> DpMBufHwIdSet [dpxxmbuf.c   1048]
DpMsgAdmin: Set patchno for this platform to 7
Release check o.K.
Sat May 14 18:02:53 2011
my types changed after wp death/restart 0x9f --> 0x9e
my types changed after wp death/restart 0x9e --> 0x9c
my types changed after wp death/restart 0x9c --> 0x98
my types changed after wp death/restart 0x98 --> 0x90
my types changed after wp death/restart 0x90 --> 0x80
DP_FATAL_ERROR => DpWPCheck: no more work processes
DISPATCHER EMERGENCY SHUTDOWN ***
increase tracelevel of WPs
NiWait: sleep (10000ms) ...
NiISelect: timeout 10000ms
NiISelect: maximum fd=1629
NiISelect: read-mask is NULL
NiISelect: write-mask is NULL
Sat May 14 18:03:03 2011
NiISelect: TIMEOUT occured (10000ms)
dump system status
Workprocess Table (long)               Sat May 14 12:33:03 2011
========================

Error in XI Dispacher running server not connected 503 service unavailable

Hi All,
We are facing a problem in SAP XI 3.0, we are having two SLD . Both Development and Quality are in One SLD and production is in a different SLD. We found error "<b>Dispatcher running but no server connected</b>! 503 service unavilable" in our QA system and this error happened in peak time only. We are using OS AS400/DB2 and Java SP 16 is udated in our systems. We didnt found any perticular error in Work Directory log file also . pls give solution to resolve this error.
Kind Rgds,
Gopinath.

hey
have a look at the following
Re: Dispatcher running but server no connected
Dispatcher running, but no server connected!!!! (Anybody out there)
Dispatcher Running; Server could not be connected
thanx
ahmad

Apple os x 10.7 server "not connected to internet" error when trying to download "essentials" through working wifi internet connection?

Lion and Server downloaded fine, but Server wants additional "essential files" .
I try to load these but I get "not connected to internet" error message despite working wifi internet connection?
How to proceed (connection is good, firewall off,??)

answer at https://discussions.apple.com/thread/3189925?tstart=90

PRD Server not connected.

hi friends,
when try to connecting PRD server --- its not connected.
it shows the error message Network Partner broken
ERROR text: WSAECONNRESET : Connection reset by PEER
counter 1 .
In command prompt i checked the ping connection for PRD server, The PRD server IP is pinging.
Plz provide solutions &i need to know this is a network problem or BASIS problem.
Regards,
K.S.Kannan.

Hi kannan,
Communication between the front end and R/3 server takes places only using the TCP/IP protocol. TCP/IP is a connection-oriented protocol that permits a certain amount of error tolerance.
This prevents minor errors in the network affecting SAP applications.If the TCP/IP stack identifies
a problem in the communication that cannot be resolved, the existing connection is closed and an error
message transmitted to the application.
The message'10054: WSAECONNRESET : Connection reset by peer' from the TCP/IP stack has the following meaning in this case:
An existing connection is terminated by the partner system. This message is usually generated if the application is stopped suddenly on the partner system, the host restarted or a "Hard Close" used.
Please check the Note 155147.
Regards
Krishna Vanga

HT4061 Cannot connect to iCloud. Server not connecting

Help my iCloud says server not found cannot backup iPhone.

Hi jenne,
Welcome to the Support Communities!
It sounds like the issue is with your Wi-Fi connection. Follow the troubleshooting steps below to address that issue first:
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/TS1398?viewlocale=en_US
Reset network settings by tapping Settings > General > Reset > Reset Network Settings.
Note: This will reset all network settings including .... previously connected Wi-Fi networks and passwords
iOS and OS X: Recommended settings for Wi-Fi routers and access points
http://support.apple.com/kb/HT4199
If the above does not resolve the issue, here are some additional steps to try:
iCloud: Troubleshooting creating an iCloud backup
http://support.apple.com/kb/TS3992
Cheers,
- Judy

Adobe Media Encoder Dynamic Link Server NOT CONNECTING to Premiere Pro

I have Media Encoder CS5, as part of the Creative Suite 5. My programs say that I have no updates to install, so everything is up to date.
I am having an issue with the dynamic link server.
Here's what has happened thus far.
Recently when I have tried to encode a project sequence from Adobe Premiere Pro it DOES NOT work. This is the first time that has happened.
I repeated the process and again, it still happened, unable to connect to the Dynamic Link.
The Error messages that I was getting was "could not read from source. Check if it has been moved or been deleted"
Once, I received this, I went to check to see if all files were linked properly, and they were. Everything was rendered and all was good in the timeline and the project itself.
Yet, again, the error message appeared.
Then I tested a previous project that I knew had been exported and worked through Adobe to Media Encoder. And all the files were linked properly and yet again received the error message I wrote above.
Then I thought the Dynamic Link itself wasn't working properly, so I tested importing an Adobe After Effects Comp into a Premiere Timeline and it DID WORK.
Then I went and tested if a video file of an already exported project would be able to sync to Media Encoder. And this WORKED.
I then went to add the file directly from Media Encoder and when I went to add a sequence from a saved Premeire File, it would take about 5 minutes "Connecting to Dynamic Link Server", to then state, "Connecting to Dynamic Link Server Failed"
My question is, how do I fix the dynamic link between Media Encoder and Premiere? Because, additionally, importing and After Effects Sequence works with Media Encoder.

I've been searching/troubleshooting for days, none of the firewall, new shortcuts in folder, antivirus, you name it I tried it even wiped my system which seemed to work at first..
What did it for me in the end was I had Dxtory (a software recorder, for recording gameplay) running on startup, and somehow it interfered with only Premiere projects in Media Encoder, I could still import AE projects go figure.
Check all the programs you have running or use sometimes, if they have some sort of hook into other programs/deal with video/codecs this could be your problem too!
Thanks to everyone trying to solve this problem!
-JonOfAllGames

Reinstallation SAP ABAP Netweaver issue message server not connected

hi ,
i am trying to reinstall SAP ABAP Netweaver but getting error in step 24 of 27. i am getting the following error.
WARNING 2010-07-20 08:52:08.078 iaxxcmsclient.cpp:93
CIaMsgClient::CIaMsgClient(localhost, 3900)
Connect to message server (localhost/3900) failed: NIECONN_REFUSED.
INFO 2010-07-20 08:52:08.078
CJSlibModule::writeInfo_impl()
State of instance NSP/DVEBMGS00 changed from ABAP: UNKNOWN to ABAP: UNKNOWN.
WARNING 2010-07-20 08:52:37.171 iaxxcmsclient.cpp:93
CIaMsgClient::CIaMsgClient(localhost, 3900)
Connect to message server (localhost/3900) failed: NIECONN_REFUSED.
WARNING 2010-07-20 08:53:07.156 iaxxcmsclient.cpp:93
CIaMsgClient::CIaMsgClient(localhost, 3900)
Connect to message server (localhost/3900) failed: NIECONN_REFUSED.
WARNING 2010-07-20 08:53:36.125 iaxxcmsclient.cpp:93
CIaMsgClient::CIaMsgClient(localhost, 3900)
Connect to message server (localhost/3900) failed: NIECONN_REFUSED.
Please do tell me how to resolve this issue.
thanks,
tanmaya

Hi Tanmaya,
Question: How to find whether the port is blocked or not?
(A) You can check the message server port in txn SMMS or dev_ms trace in ST11 to verify if the port is correctly set. If it is and you cannot connect to the message server then you will need to find out which program/service is occupying port 3900. So please follow the steps below:-
(A1) On Unix there is a program called LSOF available which shows ALL programs that occupies all ports. SAP Note [164937|http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_cst/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d313634393337%7d] shows were you can get this program.
(A2) On Windows the equilivent of LSOF is Process Explorer from the Sysinternals Suite. This is available on the MS website [here|http://technet.microsoft.com/en-us/sysinternals/bb842062.aspx]. You can use this to filter by port.
So using these programs you will be able to see which programs occupy all ports on your server and either remove or disable them.
P.S. You can use SAP Note [421359|http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_cst/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d343231333539%7d] to bind any port to any service on Unix including "protected" ports !!!
Hope this helps
Michael

SERVER NOT CONNECTED

HI I'M NEW TO THIS BUT I AM HAVING TROUBLE TRYING TO REGISTER MY PROBOOK VIA THE APPLE WEBSITE.. EVERYTIME I TYPE N PASSWORD AND PRESS SIGN IN I HAVE TO WAIT ABOUT 20 SECS BEFORE I GET A MESSAGE SAYING SERVER CONNECTION FAILED. CAN ANYONE HELP????

Next time, PLEASE DO NOT SHOUT. Thank-you
http://www.albion.com/netiquette/corerules.html

Gmail server not connecting in OS X Apple Mail

I'm not super tech-savvy, so I will try to explain my problem the best I can (and if you can answer, please keep them simple - thank you!). When using Gmail through Apple Mail on my mac, it often pops up an error message when I go to send an email (something along the lines of can't connect to the server, choose a new one or edit SMTP list). I have googled the proper setup for Gmail numerous times and have used all of those settings so I don't know where I'm going wrong. For reference, I've attached some screenshots of my current Gmail settings within Apple Mail (I've been playing with the "use custom port" option to no avail). Please help me and thank you in advance!

Some users have reported this problem if the Mail Application has been moved out of the top-level /Applications folder, or duplicated in another location.
When the Security Update is done, the old version of Mail is disabled.
The solution has been to:
1) make certain Mail is in the /Applications folder
2) There is no other copy anywhere else.
3) Once steps 1 and 2 have been done, Manually download and re-apply the Security Update (2012-004) by hand.
Security Update 2012-004 (Snow Leopard)
If the Mail.app has been LOST, it can be re-installed by applying the 10.6.8 version 1.1 combo update. But this update is quite large and it is usually not necessary:
Mac OS X 10.6.8 Update Combo v1.1

I am connected with the wi fi but still my email says server not connected

I am trying to use my email in the IPad and I get a server connected error but I am connected to the wifi

Although you may appear to be connected your router may not have given your iPad a valid IP address via its DHCP service. To check on this go to Settings > Wifi > your network name and touch the ">" to the right to see the network details. If the IP address starts with 169 then your router didn't provide an IP address and you won't be able to access the Internet.
Sometimes the fix can be as simple as restarting your router (remove power for 30 seconds and restart). Next, reset network settings on your iPad and attempt to connect. In other cases it might be necessary to update the router's firmware with the latest from the manufacturer's support web pages.
If you need more help please give more details on your network, i.e., router make/model, wifi security being used (WEP, WPA, WPA2), etc.
Does your iPad connect to any WiFi network?

Pop3 server not connecting

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