Validating an SMTP server
ietf-dane at dukhovni.org
Mon Sep 7 21:03:40 CEST 2015
On Mon, Sep 07, 2015 at 02:56:50PM -0400, Jim Popovitch wrote:
> > https://www.ietf.org/rfc/rfc2821.txt
SMTP commands are <CRLF> terminated.
> Sep 7 17:04:13 svr2 postfix/smtpd: improper command pipelining
> after HELO from ec2-52-7-167-73.compute-1.amazonaws.com[22.214.171.124]:
> HELO TEST\r\nQUIT\r\n
The problem is improper pipelining. After STARTTLS, the tester is
supposed to send EHLO (not HELO) wait for a reply, and *then* send
QUIT<CRLF> (and wait for a reply).
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