Sorry, my fault....i've activated firewall logging and i saw that exim was
calling back host in DNS MX query.
Unfortunately, in my case, that host was permanently down and so exim is
temporarily unable to verify sender and neither the receiver or the sender
received any error (why?).
I must test more carefully before posting.
Riccardo
At 10.03 23/05/2002, you wrote:
>On Wed, 22 May 2002, Riccardo Baldanzi wrote:
>
> > 2002-05-20 17:54:22 179pUM-0000jc-00 rejected from
> > (mail5.cs.interbusiness.it) [151.99.250.40]: temporarily unable to verify
> > sender address <user1@???> (try later)
>
> > Why exim is calling back the sending host? It should callback host in DNS
> > MX query....
>
>It should call back to the host that Exim gets from its routers. That
>*may* be from an MX, but it depends on how your routers are configured.
>What is the output from "exim -bt user1@???" ?
>
>However, that log line doesn't show that a callback failed. All it says
>is that it couldn't verify that address. This could be for several
>reasons - e.g. it couldn't look up the MX records. 151.99.250.40 is the
>*sending* host, not the callback host.
>
>
>--
>Philip Hazel University of Cambridge Computing Service,
>ph10@??? Cambridge, England. Phone: +44 1223 334714.
