On Mon, 22 Jul 2013 14:19:57 +0200, Gilles wrote: > Incidently, how do ISP MTAs find whether the remote MTA is legit or > running on some regular user's computer?
Look up the IP address in a database. If they don't have a database, perform a reverse DNS lookup and reject anything which looks like a typical auto-generated name for a consumer DSL/cable connection. FWIW, I've been running sendmail on my home system (ADSL with static IP) for years, and have had very few problems with mail being rejected. -- http://mail.python.org/mailman/listinfo/python-list
