On Tue, Jan 22, 2008 at 07:42:49PM +0100, Heiko Schlittermann wrote: > It slows things down, but I do not know, how the sending side would > behave with large recipients lists. If after the 30th recipient the delay of > 30s is too long for the sender, probably they will cancel the complete > transaction, starting over again with the full list some time later. > > So - writing this, there should be an upper limit (does somebody have > the RFC on hand?).
IIRC the RFC states that SMTP clients should wait *at least* 5 minutes for the
response to MAIL/RCPT, and *at least* 10 minutes for the response to
end-of-data ("."). See section 4.5.3.2 "Timeouts" of RFC2821.
--
Dave Evans
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