[Mimedefang] Greylisting and Primus

David F. Skoll dfs at roaringpenguin.com
Thu Sep 29 21:07:52 EDT 2005


Matthew.van.Eerde at hbinc.com wrote:
> David F. Skoll wrote:

>>No, but we greylist after the DATA phase.

[Amusing dialogue snipped]

The problem with greylisting at RCPT time is that
the conversation goes like this:

Man: Will you marry me?
Woman: Ask again later.

Man: Will you marry me?
Woman: Ask again later.

Man: I'm not waiting, let's consummate!
Woman: *Shoots man*

Or, in actual SMTP terms:

C: RCPT TO:<x>
S: 451 Try again later
C: RCPT TO:<y>
S: 451 Try again later
C: DATA   # What the heck, let's try DATA even though all RCPTS failed
S: 500 Silly client... Can't use DATA unless at least one RCPT succeeded.
C: Waah!!! *Generates bounce message*

--
David.



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