Check to see that the IP address your sending mail from hasn't been
blacklisted.
Glen Vickers wrote:
> Hello all,
>
>
>
> I’m having an issue I have yet to figure out. About a week or so ago my
> server stopped accepting incoming connections to send mail. I checked
> my router/firewall/port forwarding settings and all was correct. So I
> went inside our network (origionally the client was outside) and
> attempted to connect/send mail. Same error from client, unable to
> connect to mail server. So I attempted to telnet to both the external
> IP and internal IP addresses. Connection refused (using putty).
>
>
>
> I checked the logs after that and don’t see any reference to any IP
> address attempting to connect to port 25. I checked to see if IP tables
> had somehow been enabled on the machine. Nothing. I then checked for
> SELinux and ran nmap localhost and nmap /Domain/ as well as nmap
> /hostname/. It says port 25 is open and taking requests yet I get
> connection refused at any location.
>
>
>
> To make things interesting, I’m able to email to any address that server
> holds. Just can’t reply/send out from any address the server holds.
> Any thoughts where I could look? The logs don’t even show an attempted
> connection.
>
>
>
>
>
>
>
> Glen Vickers
>
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