Exchange 2013 not sending or receiving Emails

carloc
carloc used Ask the Experts™
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I have two Exchange servers 2007 and 2013. Currently mailboxes on the 2007 server are sending and receiving emails. How ever users on 2013 are not able to send or receive emails.

The Exchange 2007 is running the Hub Transport and is responsible for sending emails.

Each is a stand a lone machine. If anyone has any ideas your suggestions are welcome.

Thanks
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Most Valuable Expert 2014
Commented:
That usually means something is blocking the traffic.
Verify that you can connect to port 25 on the other server (so from 2007 to 2013 and vice-versa).
AV software can also block the inter-server traffic.

Simon.

Author

Commented:
There is not AV software running on these machines.
I am able to telnet IP 25 from my 2007 server to my 2013 server. I can also telnet IP from 2013 to 2007 server
Most Valuable Expert 2014
Commented:
If you look in the queue viewer, what does that show? If the messages are queuing there should be an error listed.

Simon.
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Commented:
I found the problem. It turns out that it was a difference in the clock time between the two servers. Once I changed this the mail flow started working.

Thanks for your help though. I think it helped in working out what was happening.
If they are both inside the network ,  your mail traffic is probably directed to the ip of the 07 server by rules in the firewall, double check its config

Author

Commented:
Thanks, your comments helped me locate the problem which turned out to be network time issues between the two exchange servers.

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