From: Vivek Khera (no email)
Date: Thu Nov 01 2001 - 09:50:23 EST
>>>>> "RFG" == Ronald F Guilmette <> writes:
RFG> So tell me please, what is this postfix "bad pipelining check" you're
RFG> speaking of? How do I enable it? Do you think that it would thwart
RFG> this type of spamming?
In smtpd_recipient_restrictions, you can specify
reject_unauth_pipelining to cause postfix to close the connection if
the remote client pipelines commands without first saying EHLO and
getting a response. That is, if you send my mail server two commands
in a row, you're toast. At least that's my understanding and
interpretation.
I suspect the leading garbage from the HTTP proxy causes this.
I trap maybe one of these every other week. Perhaps that will go up
now.
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