Hello,
It is a server 2012 running Exchange 2013 fresh install for testing purposes. Exchange set up was done with no error. Emails are ok internally, using OWA or phone under the same network or out of it, no problem with send and receive. IIS properly set up and both OWA and ESP working internally and externally.
But cannot send emails to other domains, externally. Even though still receives emails from any external domains. Telnet is working properly, connections are ok, ports are properly taken care of (used to be 25, same thing, changed it to 587 in case ISP blocking 25 but no success).
Bounce back message:
-------------------------------------------
Diagnostic information for administrators:
Generating server: <servername>
Receiving server: yahoo.com <*****>
****@yahoo.com
10/8/2014 5:35:53 PM - Remote Server at yahoo.com (63.250.192.45) returned '550 4.4.7 QUEUE.Expired; message expired'
10/8/2014 5:24:18 PM - Remote Server at yahoo.com (63.250.192.45) returned '441 4.4.1 Error encountered while communicating with primary target IP address: "Failed to connect. Winsock error code: 10061, Win32 error code: 10061." Attempted failover
to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts. The last endpoint attempted was *****:587'
-------------------------------------------
Delivery reports under ECP:
10/6/2014 2:37 PM <servername>
The message was submitted to <servername>.Pending
10/6/2014 2:37 PM <servername>
Message was received by <servername> from <servername>.
10/6/2014 2:37 PM <servername>
The message has been queued on server <servername>' since 10/6/2014 2:37:25 PM (UTC-07:00) Mountain Time (US & Canada). The last attempt to send the message was at 10/8/2014 1:57:13 PM (UTC-07:00) Mountain Time (US & Canada) and generated the error '[{LRT=};{LED=400 4.4.7 Message delayed};{FQDN=};{IP=}]'.
10/8/2014 1:57 PM <servername>
Message delivery is taking longer than expected. There may be system delays. For more information, contact your helpdesk.
