This evening I noticed that my cable internet provider appears to have decided to block outgoing SMTP (TCP port 25) connections, except to its own mail-server.
So far, so good, I can understand that in their desire to fight spam and viruses they want to route it all through a central point where there is some sort of accountability of where certain traffic is coming from.
However, it appears that their mailservers are set up too restrictive and I can’t send some messages that I used to be able to send, like MAILER-DAEMON bounces for email that couldn’t be delivered on my servers, for instance, or when a forward couldn’t be delivered for the past 4 hours? *growl*
Time to start looking more seriously into an SSH tunnel for these things.
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