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List:       exim-users
Subject:    Re: [exim] suspected mail loop - Not
From:       Viktor Dukhovni via Exim-users <exim-users () exim ! org>
Date:       2023-02-17 16:18:27
Message-ID: Y++o0wFFKY4ssFru () straasha ! imrryr ! org
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On Thu, Feb 16, 2023 at 01:54:23PM +0000, graeme vetterlein via Exim-users wrote:

> However, tracking the original message down, it was from IBM and contains e.g.
> 
> 	*29 matches for "Received" in buffer: 1670514307.H745399P3100673.ybox.xxx *
> 
> and they all appear legitimate** , it really did pass through 29 servers !

An impressive hop count, did it go through mailing lists and then get
forwarded from a user's portable email address (an alumni alias or
similar) to their current actual mailbox?

On Fri, Feb 17, 2023 at 10:13:28AM +0100, Heiko Schlichting via Exim-users wrote:

> That's hard to answer. The following is set on our servers:
> 
>     $ exim -bP received_headers_max
>     received_headers_max = 50

FWIW, this (50) matches the Postfix default:

    http://www.postfix.org/postconf.5.html#hopcount_limit

-- 
    Viktor.

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