[unisog] Rejecting incoming mail with from addresses in your own domain.

Paul Heinlein heinlein at cse.ogi.edu
Wed Jul 23 19:48:59 GMT 2003

On Tue, 22 Jul 2003, Jeffrey Altman wrote:

> Many ISPs no longer allow connections to any SMTP server other than
> their own. Any attempt to connect to port 25 on other hosts is
> simply blocked.

Worse, at least one service provider we've encountered *silently*
routed all outbound port-25 traffic to its own mail server. No advance
notice was provided; in fact, the on-site tech didn't even know about

-- Paul Heinlein <heinlein at cse.ogi.edu>

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