sendmail not working for relaying messages

[Alexander Dalloz]

Am Mi, den 04.05.2005 schrieb Janu Sundaram um 19:13:


> > "The message could not be sent because one of the recipients was> rejected 
> > by the server. The rejected e-mail address was 'janu at cs.unm.edu'. Subject 
> > 'test', Account:'mail.relate24seven.com <http://mail.relate24seven.com><
> > http://mail.relate24seven.com>> ',> Server: '65.103.191.30<http://65.103.191.30><
> > http://65.103.191.30>', Protocol: SMTP, Server> Response: '550 5.7.1> <
> > janu at cs.unm.edu>... Relaying denied', Port: 25, Secure(SSL): No,> Server 
> > Error: 550, Error Number: 0x800CCC79.

> When I use pine on the server , I can send mails to everyone and recieve 
> from everyone.

On the Sendmail host itself means relayed from localhost. That is
permitted by default (for good reasons).

> > But when I try nmap 65.103.191.30 <http://65.103.191.30>, it shows this :
> > (The 1658 ports scanned but not shown below are in state: closed)
> > PORT STATE SERVICE
> > 23/tcp open telnet
> > 80/tcp open http

See the /etc/mail/sendmail.mc configuration file and the DAEMON_OPTIONS
line, especially the comments about it. By default the Sendmail MTA is
bound to localhost only and will not accept any connection on port 25
from outside.
But this does not match the "Relaying denied" message as this requires
Sendmail seeing the attempt.

> The following is the maillog output :
> May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gq007908: 
> ruleset=check_rcpt, arg1=<janu at cs.unm.edu>,
> relay=nhpsde.heritage.unm.edu<http://nhpsde.heritage.unm.edu>[
> 64.106.114.26 <http://64.106.114.26>], reject=550 5.7.1 <janu at cs.unm.edu>... 
> Relaying denied
> 
> May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gr007908: 
> ruleset=check_rcpt, arg1=<josh at relate247.com>,
> relay=nhpsde.heritage.unm.edu<http://nhpsde.heritage.unm.edu>[
> 64.106.114.26 <http://64.106.114.26>], reject=550 5.7.1 <josh at relate247.com>... 
> Relaying denied

http://www.sendmail.org/~ca/email/relayingdenied.html

How do mail.relate24seven.com (65.103.191.30) and
nhpsde.heritage.unm.edu (64.106.114.26) play together? Last host seems
to be queried for both the recipient address @cs.unm.edu (though I do
not see it as an MX entry) and @relate247.com. Did you configure
nhpsde.heritage.unm.edu to be the smart host relay?

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
legal statement: http://www.uni-x.org/legal.html
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