Exchange server 2013 - cannot send / receive external emails - we can access owa -we can send/receive internal emails

Exchange server 2013 in Windows server 2012 VM
It was working fine then start the issue.
Firewall is managed externally and the last report said:
"I checked the firewall logs, which shows traffic being allowed through port 25 from 10.10.10.10 to 4.28.237.225: Log Number 116 Last Activity 2014-08-28 23:48:33 Status [accept] Src 10.10.10.10 Dst 4.28.237.225 Service SMTP Policy ID 1 Src Port 64081
Dst Port 25 While I showed one log, there were multiple log entries showing the same: traffic being accepted through port 25 from 10.10.10.10 to 4.28.237.225.
Can you verify that the mail server is set up so as to allow port 25? "
Today I was able to telnet the server from home: successfully
220 DTALL-EXCSRV002.DTC.dualtemp.com Microsoft ESMTP MAIL Service ready at Sat, 30 Aug 2014 16:31:16 -0400 ehlo 250-DTALL-EXCSRV002.DTC.dualtemp.com Hello [70.44.124.141] 250-SIZE 37748736 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-X-ANONYMOUSTLS
250-AUTH NTLM 250-X-EXPS GSSAPI NTLM 250-8BITMIME 250-BINARYMIME 250-CHUNKING 250 XRDST
Also the receive - send connectors seems ok
Mx record point to Microsoft protection:
dualtemp-com.mail.protection.outlook.com.
Again, OWA is able to access and send/receive emails internal but never external even no bounceback just it never arrive.
Help me please. This is my first admin chaos...

Hi,
Is there any update with your issue?
If the CAS and Mailbox servers are collocated on the same server, the SMTP Receive connection for the Transport service will listen on 2525 instead of 25. If you install the CAS and Mailbox on the same server, please make sure that port 2525 is open.
For more information about Exchange 2013 mail flow, here is a blog for your reference.
Exchange 2013 Mail Flow Demystified…Hopefully
http://blogs.technet.com/b/rischwen/archive/2013/03/13/exchange-2013-mail-flow-demystified-hopefully.aspx
Hope this can be helpful to you.
Best regards,
If you have feedback for TechNet Subscriber Support, contact
[email protected]
Amy Wang
TechNet Community Support

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Hi,
I'm new to Exchange Server 2013. I've started a POC on the product by setting up a Lab environment with one 1 AD server and 1 Exchange server (Both Windows 2012 R2). As this is a POC I just need the internal email communication. I don't want the mails to
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Hi,
You need not to configure send/receive connectors for internal email.
The following article for your reference:
http://technet.microsoft.com/en-us//library/aa996395(v=exchg.150).aspx
Default Receive connectors created during setup
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if the Microsoft Forefront Protection 2010 for Exchange Server can use for exchange server 2013?

thanks for your reply!
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Hi,
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Exchange 2013 has some Anti-Spam and Anti-Malware Protection functionality that you can read about here:
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Hello,
Come back and mark the replies as answers if they help and unmark them if they provide no help.
I'm marking the reply as answer as there has been no update for a couple of days.
If you come back to find it doesn't work for you, please reply to us and unmark the answer.
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Hi!
For several reasons, I decided to fully restore my Exchange Server 2013 machine today.
The machine is virtualized on Hyper-V.
I rebooted the server and recovered from backup and Exchange seems to be working fine. However, I cannot receive or send mail. If I try to send a message it goes to the "drafts" folder. OWA and EMC is working. I can not send mail between interna mailboxes
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When running the Exhchange Connectivity Analyzer, I get the following:
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OK. After fiddeling around in ADSIedit and trying to rebuild my Exchange environment I ended ut breaking it completely.
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Hi Support,
I have Install Exchange server 2013 and create mail box and local send received locally but days back i have not able to mail send and received. what setting are required for user mail send and received locally. and how to create mx and txt record for my
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Hi,
According to your description, I know that the Exchange server can send/receive internally at beginning, however doesn’t work now. Please correct me if there is anything misunderstand.
Great checklist from S.Nithyanandham. Additionally, how about sending/receiving via OWA? And any error messages when can’t send and receive?
Please make sure the Message Tracking has been enabled and run following command to output track log and check detail information:
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Hi Support,
I have install Exchange Server 2013 with server 2012 ( my domain not resisted but mail send & received in local for practice then live ) but few days back some changes in dns and ecp and mail stop sending and receiving. how to verify my exchange server
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dear Pardeep, you said it was working fine then you did some DNS changes..
i would suggest you best troubleshooting step is to go to exrca.com and perform the tests and from there we take it up.
Secondly you can verify your config from the below link.
http://www.techieshelp.com/exchange-2013-step-by-step-configuration/
in DNS you need to make sure you have atleast MX and A record done for your server having email services installed.
for ECP... i would we would take this later lets check the mail sending and receiving first. use the above links
MARK AS USEFUL/ANSWER IF IT DID
Thanks
Happiness Always
Jatin

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ello,
We are using NAV 2013 to externally relay email outside and inside through our in house Exchange server 2013.
I created a new Frontend connected with "TYPE" Custom and selected specific ip to configure relay through exchange server.
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When i edit the properties of the exchange server to uncheck Exchange Server it gives me an error
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Hi,
Please double check whether the "You must set the value for the PermissionGroups parameter to ExchangeServers when you set the AuthMechanism parameter to a value of ExternalAuthoritative" is an error, we can safely ignore it if it
is only a warning message.
I found a related KB for your reference even if the Exchange server version is mismatched.
Exchange 2010: Get-ReceiveConnector warns that an Exchange 2007 connector is corrupted and in an inconsistent state
http://support.microsoft.com/kb/2291884
Please double confirm the following setting:
Authentication tab: Checked TLS and Externally Secured.
Permission Groups: Anonymous users, Exchange Servers
Thanks
Mavis
Mavis Huang
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Hi,
For external mail flow, we need the following DNS records: MX records for the domain part of the external recipient, A records for the destination messaging servers. For more information, you can refer to the following article:
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It looks to me like I'm going to have to give up. I understand a lot of what you post, but I can't get the same results. (see my attachment). I wish I had some step-by-step tutorials available that I could learn from instead of trying to
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Looking at my previous post. Did I set up the DNS addresses properly on my Domain Server? Am I accessing them correctly from the Exchange Server? I don't know.
Attached is a Word document that shows what I get when I follow your above instructions. I can do the NSLOOKUP, set type=MX and then Rowley.xyz, but then nothing else is the same. If I can't get the same results you do, then I can't go anywhere.
Everyone had to start at the beginning and learn, but I'm totally lost now as to what would be the starting point and each subsequent step.
Thank you for your assistance. If I could get the answers to the DNS questions above I will try again from scratch.
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just to get this far, but no further.
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Please view the Application Pool to check whether the version of .NET Framework is 4.0 and try the following command.
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Exchange server 2013 - cannot send / receive external emails - we can access owa -we can send/receive internal emails

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