From: Wietse Venema (wietseporcupine.org)
Date: Fri Dec 02 2005 - 08:50:05 CST

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dogbert:
> >> If the problem is the total absence of "<CR><LF>.<CR><LF>" how can I resolve it
> >> ? I don't like the solution "Don't use postfix". I'd like to understand if this
> >> problem is a common issue also with mail server from internet or if it's limited
> >> to a few servers.
> >
> > SMTP mail must end in "<CR><LF>.<CR><LF>".
> >
> > If it does not, all SMTP servers will have problems, not just Postfix.
> >
>
> Actually the first mail relay is working in my infrastructure and it's not
> giving me a lot of problems. Maybe oll of my mail servers accept a less strictly
> implementation of SMTP while Postfix stick to the RFC (it's not a bad thing).

SMTP mail must end in <CR><LF>.<CR><LF>.

If you disagree, then I challenge you to provide the evidence in
the form of a tcpdump recording.

So far you have not provided a tcpdump recording that shows mail
going through without <CR><LF>.<CR><LF> at the end, where the SMTP
server recognizes the end of the message.

> > Running ethereal on your file shows your claim about EOM is inaccurate.
> >
> > ethereal sees no end of message, because no "<CR><LF>.<CR><LF>" was sent.
>
> I'm sending you another packet dump taken with ethereal from a third machine
> inside the network while the one I sent you last time is taken with tcpdump
> directly from the postfix server.
> Opening it with Ethereal I can see a packet marked EOM:.

I challenge you to provide the evidence in the form of a tcpdump
recording.

So far you have not provided a tcpdump recording without
<CR><LF>.<CR><LF> at the end, where ethereal recognizes EOM.

        Wietse

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