Ok guys, narrowing down on this problem:
I discovered a config error in the firewall. This is solved now, and using Iptraf, I can see No-IP connect to my server now.
But the test service at No-IP comes up with this error now:
2525: Invalid response (non 220)
In my mail logs I notice following...
Hi forum,
Sorry in advance if my question is 'newbee-ish' but I am fairly new to Postfix.
I'm running Ubuntu 7.10
Server is behind a firewall and ISP blocks port 25.
We have mail forwarded by No-IP mail service on port 2525.
Internal mail sending and receiving works perfect.
We have adapted...
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