451 4.4.0 Primary target IP address responded with: "421 4.2.1 Unable to Connec

server 2012 r2 full udpate with current state dc, exchange 2013 sp1 cumulative update 7 patch installed on
new fresh setup, will use exchange with outside mail hosting domain and will send mails via smart host, this already setted up
mapilab pop3 connector will get mails and deliver to exchange mailboxes
int his scenario
we can send mail to any domain from exchange owa like gmail,hotmail etc... no problems so far
however can not send email within exchange mailboxes getting the 451 4.4.0 error as the header states
There is no mail in any of our exchange inbox all stays at quoue with the error above
checked dns, firewall, av everything for 2 days no solution
help please

Hi Mehmet,
Thank you for your question.
From your original post, do you mean the pop account of the user can send emails successfully but the Exchange account of the user failed to send external emails? If there are any misunderstanding, please correct me.
Because email was sent by smart host, when we create send connector, send connector must point smart host instead of MX record.
Configuring smart host could refer to the following link:
http://technet.microsoft.com/en-us/library/cc779371(v=ws.10).aspx
Creating a send connector to route outbound email through a smart host by the following link:
http://technet.microsoft.com/en-us/library/jj673059(v=exchg.150).aspx
We could use tool (for example: ExTRA) to analysis mail flow by the following link:
http://blogs.technet.com/b/exchange/archive/2006/08/07/3394688.aspx
we could refer to the following links to troubleshoot:
https://social.technet.microsoft.com/Forums/en-US/4918c353-c6f7-466a-9d21-66f7bf732761/451-440-primary-target-ip-address-responded-with-421-421-unable-to-connect?forum=exchangesvrsecuremessaginglegacy
https://social.technet.microsoft.com/Forums/en-US/66e3759d-571a-4740-8124-e95c6b7c14bd/451-440-primary-target-ip-address-responded-with-421-421?forum=exchangesvrsecuremessaginglegacy
If there are any questions regarding this issue, please be free to let me know.
Best Regard,
Jim

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451 4.4.0 primary target IP address responded with 421 4.4.2 unable to connect

Hi,
I'm running two Exchange 2010 servers both with HUB, CAS and Mailbox. They are setup with one DAG. I also have a load balancer. Each server has the primary network adaptar and one loopback adapter for the load balancer VIP. Everything is working OK except the fact the delivery of messages.
When I fail one of the nodes, messages will start to take almost a minute to be delivered. Messages from users on the same database, using the CAS of the still functioning server.
The message queue viewer shows:
451 4.4.0 primary target IP address responded with 421 4.4.2 unable to connect Attempte failover to alternate host, but that did not suceed. Either there are no aternate hosts or delivery failed to the all alternate host.
The message is still delivered after some time.
What can be the problem here?
After running a packet sniffer, I can see that Exchange 2010 will always try the same HT server (the other server that failed) and only after some timeout it will try the local HT. As far as I know, it should try the local server first when a mailbox and a HT share the same server. But it is not doing that.

What is your Queue Glitch Retry Interval?
http://technet.microsoft.com/en-us/library/bb124568(v=exchg.141).aspx
HossFly, Exchange Administrator

Email Stuck - SMTP Relay To Remote Active Directory Site 451 4.4.0 Primary target IP address responded with: ""421 4.4.2 Connection dropped due to SocketError

hi All,
I have 2 HT, located different AD Site. HT1 located in HO Site, and HT2 located in Branch Site.
User from HO site can send email to branch site, but user from branch site cannot send email to HO site.
I found this error on Queue Viewer Console:
451 4.4.0 Primary target IP address responded with: ""421 4.4.2 Connection dropped due to SocketError."" Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed
to all alternate hosts
disable all receive connector except default connector still no luck. Telnet SMTP to HT1 from HT2 is working fine.
Event Viewer warning, event ID: 2006.
Send connector Intra-Organization SMTP Send Connector: the connection to IPHT1:25 was disconnected by the remote server.
Send SMTP Log:
2014-03-10T07:11:50.624Z,Intra-Organization SMTP Send Connector,08D109CB5D495BDE,19,IPHT2:57231,IPHT1:25,-,,Remote
2014-03-10T07:21:50.716Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,0,,IPHT1:25,*,,attempting to connect
2014-03-10T07:21:50.763Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,1,IPHT2:15741,IPHT1:25,+,,
2014-03-10T07:21:50.825Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,2,IPHT2:15741,IPHT1:25,<,"220 IPHT1.jakarta.com Microsoft ESMTP MAIL Service ready at Mon, 10 Mar 2014 14:21:50 +0700",
2014-03-10T07:21:50.825Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,3,IPHT2:15741,IPHT1:25,>,EHLO IPHT2.jakarta.com,
2014-03-10T07:21:50.872Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,4,IPHT2:15741,IPHT1:25,<,250-IPHT1.jakarta.com Hello [IPHT2],
2014-03-10T07:21:50.872Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,5,IPHT2:15741,IPHT1:25,<,250-SIZE 104857600,
2014-03-10T07:21:50.872Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,6,IPHT2:15741,IPHT1:25,<,250-DSN,
2014-03-10T07:21:50.872Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,7,IPHT2:15741,IPHT1:25,<,250-ENHANCEDSTATUSCODES,
2014-03-10T07:21:50.872Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,8,IPHT2:15741,IPHT1:25,<,250-STARTTLS,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,9,IPHT2:15741,IPHT1:25,<,250-X-ANONYMOUSTLS,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,10,IPHT2:15741,IPHT1:25,<,250-AUTH NTLM,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,11,IPHT2:15741,IPHT1:25,<,250-X-EXPS GSSAPI NTLM,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,12,IPHT2:15741,IPHT1:25,<,250-8BITMIME,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,13,IPHT2:15741,IPHT1:25,<,250-BINARYMIME,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,14,IPHT2:15741,IPHT1:25,<,250-XEXCH50,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,15,IPHT2:15741,IPHT1:25,<,250-XRDST,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,16,IPHT2:15741,IPHT1:25,<,250 XSHADOW,
2014-03-10T07:21:51.091Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,17,IPHT2:15741,IPHT1:25,>,X-ANONYMOUSTLS,
2014-03-10T07:21:51.122Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,18,IPHT2:15741,IPHT1:25,<,220 2.0.0 SMTP server ready,
2014-03-10T07:26:51.590Z,Intra-Organization SMTP Send Connector,08D109CB5D495C06,19,IPHT2:15741,IPHT1:25,-,,Remote
2014-03-10T07:26:51.590Z,Intra-Organization SMTP Send Connector,08D109CB5D495C0E,0,,IPHT1:25,*,,attempting to connect
2014-03-10T07:26:51.636Z,Intra-Organization SMTP Send Connector,08D109CB5D495C0E,1,IPHT2:15794,IPHT1:25,+,,
anyone have a clue?
thanks.
Endrik
Endrik | blog: itendrik.wordpress.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading
the thread.

Hi Niko,
I already disable IPv6 and IPv4 checksum offloading, also check the MTU on each HT but still no luck.
I found the following error on the Netmon:
i already tls on receive connector, enable anonymous authentication, still no luck.
any idea?
thanks.
Endrik
Endrik | blog: itendrik.wordpress.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading
the thread.

Primary target ip address responded with 421.4.4.2 connection dropped due to socket error

Hi,
I'm getting this error when attempting to send messages to a domain rcmoore.com. I'm unable to send or receive messages from this domain. And my exchange 2010 queue viewer gives me an error
: 451.4.4.0 Primary target ip address responded with 421.4.4.2 connection dropped due to socket error " attempted failover to alternate host, but did not
succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts.
Please help.
Subin Suresh

Hello Subin,
Have you tried a telnet to port 25 of the sending domain from the Hub transport/edge (if edge is presented)? This is required a success send. If this is not an issue, try Unchecking of "Enable Domain Security" at the properties
of the send connector and do a test
Regards from Visit ExchangeOnline |
Visit WindowsAdmin

451 4.4.0 Primary target IP address responded with: ""501 5.5.4 Required arguments not present.""

Hi,
I have a strange problem, I have installed Exchange Server 2013 CU1 as First Exchange server into my Server 2012 AD environment on a separate server. My problem is:
I cannot send mail to myself or any internal users. I can send external mail.
--When I send mail in delivery reports
Delivery Report for user ‎(user@)‎
Submitted
5/15/2013 12:20 EXCHANGE
The message was submitted to exchange
Pending
5/15/2013 12:20 exchange
Message was received by exchange from EXCHANGE
5/15/2013 12:20 exchange
The message has been queued on server 'exchange' since 5/15/2013 12:20:43 PM (UTC+02:00) . The last attempt to send the message was at 5/15/2013 12:17:43 PM (UTC+02:00) and generated the error '[{LRT=};{LED=};{FQDN=};{IP=}]'.
--Also in my smtp logs;
451 4.4.0 Primary target IP address responded with: ""501 5.5.4 Required arguments not present.""
451 4.7.0 Temporary server error. Please try again later. PRX4 ,
My settings are default settings. I cannot figure the problem, any suggesstions?

Hi,
How about OWA and other machine ? Does only one user occured this issue ?
"451 4.4.0 Primary target IP address responded with: ""501 5.5.4 Required arguments not present"
Please check your NIC setting.
Wendy Liu
TechNet Community Support

451 4.4.0 Primary target IP address responded with:"454 4.7.0 Temporary authentication failure"

I have this error on both my hub transport servers. I cannot get the communication between them.
This is also accompanied by the event ID 2017 in the application log. Description
Outbound authentication failed with error TargetUnknown for Send connector Intra-Organization SMTP Send Connector. The authentication mechanism is ExchangeAuth. The target is SMTPSVC/<servername.FQDN>.
I have already the following http://technet.microsoft.com/en-us/library/bb217800.aspx
It only tells me how to fix a send connector that i created. The connectors mentioned above is the ones that exchange creates when trying to send between sites.
Has anyone else got this problem if so how did you resolve it?

Had the same issue and messages were stuck in the queue with error in this thread along with 1035 smtprecieve errors.
Tried below steps:
1. recycle of transport services, hub servers. still same issue
2. Followed KB: http://support.microsoft.com/kb/979174/en-us and found time was correct on DC, exchange, no duplicate SPN etc
3. Later ran a wireshark/netmon trace on a HUB transport server where queues were building and found Kerberos skew errors pointing to time sync issue. (please note time was correct though on DC & exchange)
krb5krb_AP_ERR_skew >>
which points to kerberos failures due to time sync issues
Audit logs had below failures:
Failure Reason:                      An
Error occured during Logon.
                Status:
0xc000006d
                Sub Status:
0xc0000133
4. Noticed that
krb5krb_AP_ERR_skew were coming to Hub when communicating with some DC other than DC's configured on Hub server. These DC's were DR servers running on Hyper-v.
5. Found that these DR DC's listed as krb skew error were off more than 5 minutes. We disabled time synchronization on hyper-v host and corrected DC's running on VM to
sync time with PDC server. This fixed the issue and mail started flushing.
So, wanted to point out that please double check your time sync for this issue and best to run wireshark to find any clues.
Regards.
KailashC

I recently updated my primary email address associated with my Apple ID account. When I go to App store on my iPad it still tries to login to the App store using the old email address I had associated with the account, and naturally my password doesn

I recently updated my primary email address associated with my Apple ID account.
Now when I go to App store on my iPad it still tries to login to the App store using the old email address I had associated with the account, and naturally my password doesn't work. I can't figure out how to tell my iPad to login using the updated email address.
So in effect I'm locked out of the app store and I currently have 26 updates waiting.
I've tried disconnecting and reconnecting my IPad to iCloud with no luck.. However I cloud happens to show the correct/updated email address.
Does anyone know how to resolve this?
Thanks

Did you change the email for the Apple ID or did you create a new Apple ID? A new Apple ID cannot be used with content that was bought using a different Apple ID.
Changing the email address you use for your Apple ID -
http://support.apple.com/kb/HT5621

Can't change primary e-mail address, no access to ...

Alright here's the issue I signed up for my microsoft account through my brothers account and got Skype on my 360. Now I upgraded to my xboxone and I relize that my brother's e-mail is still located as the Primary. I had already changed my microsoft account to an e-mail address that I use. However, I can't seem to change my Primary E-mail address to my actual e-mail because I don't recall the password that I had created with that account. Is there any way to remove that old account? I tried looking for customer service however it either redirects to the community, the help page, or the form fill out page (that doesn't seem to exist). Any help would be awesome especailly since all I want to do is to change my secondary e-mail to my primary.

Hi, Matt_Randall, and welcome to the Community!
I confess, I am confused. If you use Skype now, the password you use to sign on to your outlook.com account should be the same password you would use to sign on to the software or app and also the Skype website, where your Skype account details are accessed. Perhaps this FAQ article will explain the process a little better:
https://support.skype.com/en/faq/FA96/how-do-i-change-my-email-address-or-add-another-email-address-...
I could very well be wrong ... will continue to dig into this and revert.
If all else fails, here is a link to the instruction on how to contact Skype Customer Service via their secure portal: Contact Customer Service
As you know you intend to contact Customer Service, skip past Step 2 of the instruction where several articles from the FAQ library will appear for you to review, and proceed to Step 3, Continue Support Request (the "button" appears at the lower right corner of the website page). You may also skip past in Step 4 where you will be referred back here to the Community; no need to do this as the Community is where you started.
Elaine
Was your question answered? Please click on the Accept as a Solution link so everyone can quickly find what works! Like a post or want to say, "Thank You" - ?? Click on the Kudos button!
Trustworthy information: Brian Krebs: 3 Basic Rules for Online Safety and Consumer Reports: Guide to Internet Security Online Safety Tip: Change your passwords often!

Can't use Find My Friends on iPhone due to Apple ID not being verified. Can't do this as I can't access my .mac email any longer and I can not change the primary e-mail address for my Apple ID!

Can't use Find My Friends on iPhone due to Apple ID not being verified.
Can't do this as I can't access my .mac email any longer and I can not change the primary e-mail address for my Apple ID!
So my options are:
Create a new Apple ID, use that and lose all the apps I've purhcased with it (a fairly substantial amount)
Somehow Migrate these purchases over to a new Apple ID
Apple let me change the primary ID for the account
Anyone else ran into this before?
I've tried accessing the mail through a mail application using the correct server information, and trying both the old 6 character password and the one I had to change it too after they updated the security guidelines - neither work.
Help would be greatly appreciated as I can see more services down the line not working without the address being verified!

To change the iCloud ID you have to go to Settings>iCloud, tap Delete Account, provide the password for the old ID when prompted to turn off Find My iDevice, then sign back in with the ID you wish to use. When you do this you may find that the password for your old ID isn't accepted. If this should happen, and if your old ID is an earlier version of your current ID, you need to temporarily recreate your old ID by going to https://appleid.apple.com, click Manage my Apple ID and sign in with your current iCloud ID. Click edit next to the primary email account, change it back to your old email address and save the change. Then edit the name of the account to change it back to your old email address. You should not need to verify the old email address. You can now use your current password to turn off Find My iDevice on your device, even though it prompts you for the password for your old account ID. Then save any photo stream photos that you wish to keep to your camera roll. When finished go to Settings>iCloud, tap Delete Account and choose Delete from My iDevice when prompted (your iCloud data will still be in iCloud). Next, go back to https://appleid.apple.com and change your primary email address and iCloud ID name back to the way it was. Now you can go to Settings>iCloud and sign in with your current iCloud ID and password.

I need to change my AppleID's primary e-mail address, but there's no option to.

So my main AppleID is "****" and I've been using it since 2004 for iTunes and other Apple Support functions.
Because of the switch to mobileme and the switch to icloud, I can no longer check my @mac.com e-mail, so I'm unable to receive receipts from iTunes and Apple Store purchases. I realized this today when I purchased an item at my local Apple Store and it noted that it would e-mail me the receipt.
How can I change the primary e-mail address attached to my AppleID so I'll be able to receive receipts and other e-mails from apple from now on?
If there's no way to change this e-mail, how can I check my .mac e-mail account now?
<Edited By Host>

Okay we're sorta making progress. Barely.
I chatted with someone from support based on your suggestion and she was able to disconnect my AppleID and primary e-mail address.
My "primary e-mail address" on the AppleID site is now listed as my @me.com account.
However, it's asking me to verify it, but no matter how many times I click the "resend verification e-mail" link, nothing has shown up.
If I try to change it to an alternate e-mail, like my @bellsouth.net account, clicking "save" to save those settings does nothing, and it reverts back to @me.com
Nothing at all gets through to my mac.com account.
This is especially troubling since I updated to Mountain Lion this morning. One of the first programs I used, Messages, asked me to verify my AppleID by checking my @mac.com e-mail.
What a headache.

HT5622 I bought my iphone whilst at work and used my primary e-mail address as my Aple ID. Now i am retired the email address is no longer active. i have forgotton my password. what do i do

I bought my iphone whilst at work and used my primary work e-mail address as my Aple ID. Now i am retired the email address is no longer active. i have forgotton my password. what do i do

Try to recover it:
https://support.apple.com/kb/ht5787
Then change the email address associated with your ID:
http://support.apple.com/kb/ht5621

Can't get back to my Primary e-mail address

Hello!! i hope someone can help me with this!!
- I was having problems verifying my primary e-mail address on appleid.apple.com.... I had this message about my email address wasn't veryfied and that I needed to verify it on order to get access to icloud. I clicked a looooot of times the link "verify now" but nothing happened... so I decided to change the primary e-mail address to something else, now, I can't get back to my original primary email address when I hit "save changes" nothing happens!
does anyone have an idea on how to fix this??
Thanks!
LMC

I use a supplied router (o2) as the DHCP server and a number of extremes in bridging mode to extend my local network. The networks at my offices all use non Apple routers,. Back to my mac works across my LAN and my WAN but doesn't seem to be able to wake sleeping macs across the WAN.

I want to change my primary e-mail address that I use with Apple ID - help guide says Select Edit next to "Apple ID and Primary Email Address." But there is no 'edit' on that section there is on every other but not that one. Can anyone help?

I want to change my primary e-mail address that I use with Apple ID - help guide says Select Edit next to “Apple ID and Primary Email Address.” But there is no 'edit' on that section there is on every other but not that one. Can anyone help?

You can create an alias @icloud.com email address within your current account that will receive email in your current iCloud inbox (see http://help.apple.com/icloud/#/mm6b1a490a). (@me.com addresses are no longer available as new addresses.) Just be aware that you cannot use an alias address later to create a new iCloud account or move it to a different account.
Also, even if you created a new iCloud account with a new ID, your existing purchases would not be lost. They are permanently tied to the original ID you used to purchase them. You can also continue to use the existing ID for the iTunes store; it does not need to be the same as the ID you use for iCloud.

HT5621 how can I delete a primary e-mail addresse and replace it with a excisting Apple ID?

How can I delete a primary e-mail address and replace it with a excisting Apple ID?

An email address can only be used one account at a time, so if you want to replace it with an email address that is currently being used on another account then you will need to remove it from that account first before trying to put it on that account. You should be able to change the email address either by logging into your account on your computer's iTunes via the Store > View Account menu option, or via http://appleid.apple.com

Change primary account email address?

Is it possible to take a newly created sub account and make it the primary account email address? If so would this carry over to other linked services (ie Flickr) so I could delete the original primary email address
Thanks

arsagg wrote:
Clarifying on Andy:
Flickr maintains its own database to login. It only uses the email to communicate and update you. Once you 'll get your primary email changed in BT, you can maintain the same on flickr thereafter.
Note: Changing your primary email address on Flickr will not change your Yahoo! log in.
www.flickr.com/account/prefs/email/?from=email
Sorry, but I'm going to question this again. The only way a BTinternet user can have a flickr pro account is by the association with their Broadband email address (either primary or sub account). Using any other email address (e.g. payg) will get the user a very limited Flickr account.
Unless the primary email address already in use by Stuart is converted to a sub account, then it is likely to cause problems and effectively stop them being a pro user.
The link you quoted has nothing to do with altering the user's Flickr status which is actually in question here.
Now - I am not saying that you are wrong, to me it just doesn't add up with the info I am aware about with regard Flickr pro accounts.
http://www.andyweb.co.uk/shortcuts
http://www.andyweb.co.uk/pictures

451 4.4.0 Primary target IP address responded with: "421 4.2.1 Unable to Connec

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