Re: [Exim] percent hack relaying help, please

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Author: Philip Hazel
Date:  
To: Nancy Davis
CC: exim-users
Subject: Re: [Exim] percent hack relaying help, please
On Tue, 21 May 2002, Nancy Davis wrote:

> Any help in finding out why this host is relaying would be greatly
> appreciated.


Sigh. This looks like "the usual misunderstanding".

> Evidence of relaying: (In addition to having received this mail at "outside.domain.com")
>
> secondary.outside.domain.com:~/bin> ./rlytest.pl -f user@??? -u user%outside.domain.com
> @host.our.edu -c "Testing mail relay off host" host.our.edu
> Connecting to host.our.edu ...
> <<< 220 host.our.edu ESMTP Exim 3.35 #1 Tue, 21 May 2002 22:40:37 -0600
> >>> HELO secondary.outside.domain.com
> <<< 250 host.our.edu Hello secondary.outside.domain.com [111.111.111.111]
> >>> MAIL FROM:<user@???>
> <<< 250 <user@???> is syntactically correct
> >>> RCPT TO:<user%outside.domain.com@???>
> <<< 250 <user%outside.domain.com@???> verified
> >>> DATA
> <<< 354 Enter message, ending with "." on a line by itself
> >>> (message body)
> <<< 250 OK id=17ANvR-0000Tq-00
> >>> QUIT
> <<< 221 host.our.edu closing connection
> rlytest.pl: relay accepted - final response code 221


That is no evidence at all. It is evidence that your host accepts the
address user%outside.domain.com@???. That's all. There is no
evidence that it actually relays the message to user%outside.domain.com.

Of course, maybe it does. But you can't tell from that evidence.


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