Tickets :: Comment on [#14574] Invalid Received header

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Comment	> IMP is generating this Received header which contains IP address of a client: > > Received: from 1.2.3.4 ([1.2.3.4]) by webmail.example.com > (Horde Framework) with HTTPS; Mon, 06 Feb 2017 13:00:50 +0100 > > The problem is that the first IP address (within no brackets) is > supposed to be an HELO/EHLO string. If HELO/EHLO is an IP address, it > must be inside "[" and "]" brackets. The headers should look like > this: > > Received: from [1.2.3.4] ([1.2.3.4]) by webmail.example.com > (Horde Framework) with HTTPS; Mon, 06 Feb 2017 13:00:50 +0100 > > Current format is doing problems for example with SpamAssassin: > E-mails are fireing RCVD_NUMERIC_HELO and FSL_HELO_BARE_IP_2 spam > checks. You can try it here: > http://spamcheck.postmarkapp.com/
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