Re: [Exim] exim 3.33 not trying multiple MX records (?)

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Autor: Philip Hazel
Data:  
A: Michael J. Tubby B.Sc. (Hons) G8TIC
CC: Randy Banks, exim-users
Assumpte: Re: [Exim] exim 3.33 not trying multiple MX records (?)
On Tue, 13 Nov 2001, Michael J. Tubby B.Sc. (Hons) G8TIC wrote:

> > 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.
> >
>
> Yes, because its a permenant error, ie. a 5xx error.


Indeed. At some time in Exim's history a bug which caused it to keep
retrying was fixed. This just proves that every bug will be exploited by
someone as a facility if you don't fix it quickly enough. :-)

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.