[exim-dev] [Bug 731] massive Probleme wegen kombinierter Kom…

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Autor: Johannes Berg
Datum:  
To: exim-dev
Betreff: [exim-dev] [Bug 731] massive Probleme wegen kombinierter Kommandos
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http://bugs.exim.org/show_bug.cgi?id=731




--- Comment #4 from Johannes Berg <johannes@???> 2008-07-09 13:51:17 ---
[raw translation, I'll save my comments for another comment, notes in brackets
like this are from me]

massive problems due to combined commands

]I assume the reporter means pipelining]

The method exim uses to send multiple commands within a single frame [TCP
packet?] without waiting for answers is causing massive problems with various
mail recipients. According to RFC 2821 SMTP commands must be sequenced to send
a new command only when the answer has been received, with the exception of
MAIL FROM, RCPT TO that may be given in combination.

In every case, however, the answer to RCPT TO has to be awaited before sending
DATA.

Because exactly that is violated, the DATA command is correctly being ignored
by the recipient which causes exim to time out and abort the connection.

------- Comment #1 From Heiko Bialozyt 2008-07-09 10:51:59 [reply] -------

Problem was found at freenet and verified with various MS SMTP receivers:
Exchange 2000, 2003, 2007, IIS 5


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