Date: Fri, 08 Jan 2010 08:39:09 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-questions@freebsd.org Subject: Re: Any delivery block to freebsd-questions list? Message-ID: <4B46EF2D.5020300@infracaninophile.co.uk> In-Reply-To: <20100108060639.GA2393@current.Sisis.de> References: <20100107201839.GA15118@albatros.sisis.de> <4B4645B3.2000207@joseph-a-nagy-jr.us> <44k4vthbtr.fsf@be-well.ilk.org> <20100108055704.GA2025@current.Sisis.de> <20100108060639.GA2393@current.Sisis.de>
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Matthias Apitz wrote:
> El d=EDa Friday, January 08, 2010 a las 06:57:04AM +0100, Matthias Apit=
z escribi=F3:
>=20
>>> Sounds like that's just graylisting. The delay will depend on how lo=
ng
>>> it takes your MTA (or the smarthost you use) to retry the message.
>> In my case it seems not to be graylisting, but blacklisting; i.e. the
>> mail is not delivered at all :-(
>=20
> Now, with the above reply, the mail of yesterday showed up in the list
> as well... what is this?
Well, looking at the headers, it spent about 11 hours sitting at ms4-1.1b=
lu.de.
Once it was accepted at freebsd.org, it went out to the list in about 2 m=
inutes.
Received: from ms4-1.1blu.de (ms4-1.1blu.de [89.202.0.34])
by mx1.freebsd.org (Postfix) with ESMTP id EDF3F8FC1C
for <freebsd-questions@freebsd.org>;
Fri, 8 Jan 2010 05:57:09 +0000 (UTC)
Received: from [193.31.11.193] (helo=3Dcurrent.Sisis.de)
by ms4-1.1blu.de with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32)
(Exim 4.50) id 1NSuhI-0004mn-4D
for freebsd-questions@freebsd.org; Thu, 07 Jan 2010 16:54:52 +0100
Received: from current.Sisis.de (current [127.0.0.1])
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Thu, 7 Jan 2010 16:54:51 +0100 (CET) (envelope-from guru@unixarea.de)
Now, not knowing what the configuration of ms4-1.1blu.de is like,
I can only speculate that it tried to deliver to mx1.freebsd.org and, for=
whatever reason, failed at the initial attempt. [It's not greylisting by=
the FreeBSD mailservers, because they don't use it.] We can't see from t=
his
trace how many times ms4-1.1blu.de retried sending the message during tha=
t
time -- typically it should try again after 15 or 30min and then keep try=
ing
again at that sort of interval or longer for up to 5 days. As they are u=
sing Exim, it's quite likely the message ended up in a stuck-message queu=
e which would still keep retrying delivery, but at a much lower frequency=
=2E
Without looking at the mail logs on mx1.freebsd.org we can't know why the=
message wasn't accepted. We can tell that it was temp-failed -- ie. you
didn't get a bounce back with a permanent failure message. There are sev=
eral
mechanisms used with e-mail that might generate this sort of temp-fail re=
sponse
(SPF, DKIM -- but there are no indications freebsd.org uses these in the
message headers) or else the problem might well have been a failure in th=
e DNS
-- if mx1.freebsd.org couldn't look up ms4-1.1blu.de or sisis.de then it =
wouldn't accept the message. This last scenario seems the most likely to=
me, especially since you say you've recently changed e-mail service prov=
ider.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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