[EuroPython] SMTP is filtered/sniffed on wireless in hotel

[Christian Theune]

Just in case: I noticed that the (outgoing) SMTP in the hotel's wireless
network is filtered (very) transparently by the local router. 

I noticed because the postfix that seems to filter it presents you with
an invalid certificate when trying to connect via SMTP/TLS to the
outside world. 

Beware of your SMTP passwords.

Christian