SMTP issue, could not connect to SMTP host error

Ignition
1

My error says "Could not connect to SMTP host:..." when I run a test.

I contacted my IT, and they said the SMTP host is listening.
I have 3 gateways testing with the same settings working and one not working.

Is there a bug out there that is know that might be the issue on the Ignition side?
Or do I ask for another SMTP to test against to see if it is the gateway vs the SMTP host?

What is recommended?

I appreciate the help.

2

The target host is probably running a blacklist, like fail2ban. If you tested with incorrect settings a few times, that might have triggered. Have your IT double check such things for the failing gateway's IP address.

Also check that there is actually a network path from that gateway to the SMTP server (traceroute).

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3

There was an authorization list for an app server that needed to be given permissions.

Thanks again for the help @pturmel

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