LinuxSA Mailing list archives

  From: Andrew Halliday <andrew@recalldesign.com>
  To  : <linuxsa@linuxsa.org.au>
  Date: Thu, 24 May 2001 12:41:03 +0930

Sendmail woes

Okay, Im sure this is a simple one for sendmail experts, but i could be
considered a newbie when it comes to sendmail ... since sendmail seems to be
a small OS of its own - all written in textual assembly :)

Anyhoo, ANY time when trying to send mail to or from an address which is not
localhost, i get a 553.

Following is a typical SMTP transcript:

220 localhost ESMTP Debian Sendmail 8.12.0.Beta7/8.12.0.Beta7/Debian
8.12.0.Beta7-1; Thu, 24 May 2001 12:04:39 +0930
HELO x
250 <machinename> Hello root@localhost [127.0.0.1], pleased to meet you
MAIL FROM:<andrew@recalldesign.com>
553 5.1.2 <andrew@recalldesign.com>... Unrecognized host name
recalldesign.com.

This does the same thing for both MAIL FROM:'s and RCPT TO:'s, with all
domains.

eg:

MAIL FROM:<andrew@localhost>
250 2.1.0 <andrew@localhost>... Sender ok
RCPT TO:<andrew@recalldesign.com>
553 5.1.2 <andrew@recalldesign.com>... Unrecognized host name
recalldesign.com.


The box's DNS is set up and working fine (ie can ping yahoo.com.au).

At first I thought it was a relaying problem but when i saw that there is
actually a specific error for relaying problems (relaying denied error) i
sortof dismissed that, in favour of thinking what the error text suggests
'Unknown hostname' ... as if there is a lookup failure or a trusted domain
permissions failure or something.

Can anyone help?  I have checked:
- past 5000 linuxsa emails
- sendmail faq
- www.google.com
- sendmail mailing list archives

Thanks in advance,
AndrewH

PS You might note that the box sendmail is on is an internal box (internal
to a work network) but has external access via a gateway.

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