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From: Damian Myerscough (damian.myerscoughgmail.com)
Date: Tue Jul 21 2009 - 15:17:13 CDT
How could you tell this was a CISCO "Fixup" problem? I am just
2009/7/21 Brian Evans - Postfix List <grknightscent-team.com>:
> postmaster at thessaloniki dot gr wrote:
>> Hi there
>> I have a weird problem with postfix 2.3 regarding TLS configuration.
>> Although the certificates are correctly installed and verified, the
>> STARTTLS command is offered
>> only on hosts on the same network with the mail server.
>> Hosts that access the mail server outside the internal network and
>> issue the EHLO commad they do not get the STARTTLS
>> on the server's reply.
>> Mail server is behind proxy with a public IP that the server doesn't
>> know, and a private IP (server is aware of).
>> Port 25 is publicly accessible.
> Another Cisco "Fixup" casualty.
> grknightmx1 ~ $ telnet smtp.thessaloniki.gr 25
> Trying 126.96.36.199...
> Connected to smtp.thessaloniki.gr.
> Escape character is '^]'.
> 220 **********************************
> EHLO scent-team.com
> 250-SIZE 10240000
> 250 DSN
> Disable smtp fixup in your router. It breaks more things than solves.