On Tue, Jun 14, 2011 at 02:18:43PM -0400, Wietse Venema wrote:

> > # telnet mailamir.com 25
> > Trying 114.31.73.44...
> > Connected to mailamir.com.
> > Escape character is '^]'.
> > 220 **************************
> 
> Hmm...
> 
> % telnet mailamir.com 25
> Trying 114.31.73.44...
> Connected to mailamir.com.
> Escape character is '^]'.
> 220 **************************
> help
> 502 5.5.2 Error: command not recognized

A Postfix system with a PIX in front of it and STARTTLS censored as
"XXXXXXXA" (same length).

    Connected to mailamir.com[114.31.73.44]:25
    < 220 **************************
    > EHLO amnesiac.example.com
    < 250-mailamir.com
    < 250-PIPELINING
    < 250-SIZE 20480000
    < 250-VRFY
    < 250-ETRN
    < 250-XXXXXXXA
    < 250-ENHANCEDSTATUSCODES
    < 250-8BITMIME
    < 250 DSN

-- 
        Viktor.

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