Greetings Sophos community. I have a Windows 2016 server that serves as the Sophos management server and has SEC 5.5.1 running with client version 10.8.4 VE 3.74.1. When I attempt to configure the SMTP settings from SEC > Tools > Configure SMTP settings, I enter the SMTP server (by either IP or DNS Hostname) and try to test it, I get "SMTP settings do not refer to a valid SMTP server or the server is inactive". In my testing, I've: verified the SMTP server includes the Sophos host server's IP in the "allow list" confirmed I can ping the SMTP server AND telnet to it using [telnet smtp-servername 25] tried using the IP and DNS name of the SMTP server with the :25 verified the GP that is applied to the Sophos management server allows traffic on port 25 and 587 I'm at wits end with this as I missed an alert that a PC had detected an infection. Being the sole admin for 250 host environment makes email notification critical. Any help getting this to work would be appreciated. Thanks in advance for your time.

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SEC 5.5.1 (Configure SMTP server settings)

Greetings Sophos community. I have a Windows 2016 server that serves as the Sophos management server and has SEC 5.5.1 running with client version 10.8.4 VE 3.74.1.

When I attempt to configure the SMTP settings from SEC > Tools > Configure SMTP settings, I enter the SMTP server (by either IP or DNS Hostname) and try to test it, I get "SMTP settings do not refer to a valid SMTP server or the server is inactive".

In my testing, I've:

verified the SMTP server includes the Sophos host server's IP in the "allow list"
confirmed I can ping the SMTP server AND telnet to it using [telnet smtp-servername 25]
tried using the IP and DNS name of the SMTP server with the :25
verified the GP that is applied to the Sophos management server allows traffic on port 25 and 587

I'm at wits end with this as I missed an alert that a PC had detected an infection. Being the sole admin for 250 host environment makes email notification critical. Any help getting this to work would be appreciated. Thanks in advance for your time.

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0 Shweta over 5 years ago
Hi PC_Junkie

Can you try restarting the following services on the server where the enterprise console is installed?

Sophos Agent

Sophos Message Router

Sophos Management Service

Please make sure that you have the Enterprise console closed before you restart these services. You can follow Microsoft's KB to check the SMTP communication is working fine or not, use telnet as suggested in this article. Let me know if this helps.
Shweta

Community Support Engineer | Sophos Technical Support
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0 PC_Junkie over 5 years ago in reply to Shweta

I stopped the services you specified and restarted them. I got emails from the SEC (same ones I did when I restarted the server earlier) however still unable to use the test option in the SEC (same error message).

I asked the Exchange/SMTP relay folks to check that there aren't any errors relating to this server.
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0 PC_Junkie over 5 years ago in reply to Shweta

I stopped the services you specified and restarted them. I got emails from the SEC (same ones I did when I restarted the server earlier) however still unable to use the test option in the SEC (same error message).

I asked the Exchange/SMTP relay folks to check that there aren't any errors relating to this server.
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