[Assp-user] Antwort: incomplete good mail

[Thomas E. <Tho...@th...>]

Oh - sorry, forgot to say. The reason could also be our own backend 
server. If this connection is closed for any reason before a reply was 
sent or the client was able to send the QUIT - assp will do the same, 
because it could be the case, that our mail server was very unhappy about 
this mail and was not NICE to assp.

The connection could also be killed by a firewall or any other ....... !? 
Only because of this - "we don't know why" - no scoring or blacklisting is 
done. Don't sending a QUIT is IMHO the same misbehave like any other RFC 
mistake we punish.

Thomas




Von:    Grayhat <gr...@gm...>
An:     ass...@li..., 
Datum:  17.09.2013 08:53
Betreff:        Re: [Assp-user] Antwort: Re:  Antwort:  incomplete good 
mail



> > This depends on your MTA. If the DATA part was done (\r\n.\r\n was
> > sent), some mail server deliver the mail even a 'QUIT' was not
> > received.
 
> Thomas... maybe I'm wrong (or not completely awake <g>) but most
> (all ?) MTAs will accept a message as long as, after the data part
> they receive the final dot; at that point, the sending part may
> either close the session with a QUIT or issue an RSET and send
> another message...

just in case...

SMTP< 220 gmx.com (mrgmx001) Nemesis ESMTP Service ready
ESMTP> EHLO example.com
ESMTP< 250-gmx.com Hello example.com [192.0.2.130]
ESMTP< 250-SIZE 69920427
ESMTP< 250 AUTH LOGIN PLAIN
ESMTP> AUTH LOGIN
ESMTP< 334 VXNlkm7hbWH6
ESMTP> [USERID]
ESMTP< 334 UGFyc7dwchQ5
ESMTP> [PASSWORD]
ESMTP< 235 Authentication succeeded
ESMTP> MAIL FROM:<so...@gm...> SIZE=1120
SMTP< 250 Requested mail action okay, completed
SMTP> RCPT TO:<recipient@domain.xyz>
SMTP< 250 OK
SMTP> DATA
SMTP< 354 Start mail input; end with <CRLF>.<CRLF>
SMTP> . (EOM)
SMTP< 250 Requested mail action okay, completed
SMTP> QUIT
SMTP< 221 gmx.com Service closing transmission channel

now, as you can see, after receiving the "." the SMTP server replied
with a "250" and accepted the message, at that point it's up to the
sender deciding to either terminate the session with a QUIT command or
resetting it using an "RSET" and sending another message


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