All -
Many thanks to all of you who replied to my original message (appended)
The consensus seems to be that the only thing which is still broken is
the remote site which seems to be improperly using a 520 reply to force
deliveries to be routed through one of two other hosts (in my example,
back.up1 and back.up2). A domainlist router has sorted this out (on a
temporary basis, I hope).
We were able to ignore the problem to this point only through our
rigourous and disciplined approach to upgrades, as exim did not
immediately stop delivery attempts on receipt of a 5xx reply until
version 3.166.
"9. Exim was treating a 5xx response on connection to an SMTP server,
or in response to HELO, in the same way as a connection failure - that
is, as a temporary error, causing the message to be tried again later.
It now bounces all the addresses in these situations." (thank you PH
for pointing this out)
Many thanks, in particular, to:
John Lane <john.lane@???>
Eric Kuzniar <kuzniar@???>
"Michael J. Tubby B.Sc. (Hons) G8TIC" <mike.tubby@???>
Philip Hazel <ph10@???>
Paul Siddall <pauls@???>
randy
--
On Tue, 13 Nov 2001 17:01:45 +0000 (GMT Standard Time) Randy Banks
<randy@???> wrote:
> All -
>
> Many apologies for troubling you, but we have a problem which has come
> up only since our recent upgrade from version 2.05 to 3.33. In
> particular:
>
> I am trying to mail to a user in domain foo.bar which has three MX
> records, e.g. ...
>
> host foo.bar ... MX=0
> host back.up1 ... MX=10
> host back.up2 ... MX=20
>
> ... none of which are broken.
>
> In order to deliver mail to user@???, exim first tries to connect
> to foo.bar but is blocked with an error 520 "Connection not authorised
> from this address." Exim does not then proceed to connect to back.up1
> or back.up2, but gives up the ghost and returns an failed message
> report back to the sender.
>
> No such problems were reported prior to our upgrade, and our (fairly
> simple) configuration file was only minimally changed by the convert4r3
> script. I have RTFM, RTVFB (very fine book) amd searched the archives
> to no avail. I have also tried explicitly setting hosts_max_try = 5,
> also to no avail.
>
> Any and all assistance would be welcome; further details can be
> supplied on request.
>
> Many TIA for your help and many apologies in advance if I've missed
> something blatantly obvious.
>
> randy
>
> ----------------------
> Randy Banks (randy@???)
> ISER, University of Essex
> Colchester, Essex, UK CO4 3SQ
> tel: +44 (0)1206 873 067; fax: +44 (0)1206 873 151
>
>
> --
>
> ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim details at http://www.exim.org/ ##
>
----------------------
Randy Banks (randy@???)
ISER, University of Essex
Colchester, Essex, UK CO4 3SQ
tel: +44 (0)1206 873 067; fax: +44 (0)1206 873 151
