Simple Python script as SMTP server for outgoing e-mails?

Nobody nobody at
Mon Jul 22 22:32:59 CEST 2013

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.

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