[BlueOnyx:10972] Server error: '554 5.0.0 rewrite: excessive recursion (max 50), ruleset canonify'

[DD]

Hi All,

I have a site, mtbe.co.uk which is configured on its own IP address on a
server running 5108R.

Main server IP: 83.170.92.155
Site IP: 83.170.92.204

I cannot send email to this site - I get the subject error every time. 

---- 8< ----
Your message did not reach some or all of the intended recipients.

      Subject:	test
      Sent:	21/07/2012 03:39

The following recipient(s) cannot be reached:

      '****@mtbe.co.uk' on 21/07/2012 03:39
            Server error: '554 5.0.0 rewrite: excessive recursion (max 50),
ruleset canonify'
---- >8 ----

(Recipient is a catchall account)

This happens whether I use an external SMTP like gmail or use the server
itself for (authenticated) SMTP. In addition, PHP's mail() command gives a
'Service Unavailable' error in /var/log/maillog:

---- 8< ----
	Jul 21 04:04:00 Server57056 sendmail[20522]: q6L33x7V020522:
to=****@mtbe.co.uk, ctladdr=apache (48/48), delay=00:00:01, xdelay=00:00:01,
mailer=relay, pri=30934, relay=[127.0.0.1] [127.0.0.1], dsn=5.0.0,
stat=Service unavailable
---- >8 ----

I found a thread in the archives which contains a link to a Solarspeed page:
http://mail.blueonyx.it/pipermail/blueonyx/2010-October/005559.html

Archive.org link (as the page link in the above post is giving an error):
http://web.archive.org/web/20100803225225/http://www.solarspeed.net/otrs/pub
lic.pl?Action=PublicFAQ&CategoryID=3&ItemID=16

I have everything set up as per these instructions:
http://i.imgur.com/kFBXK.png

I've removed and recreated the entire site and email accounts to no avail. I
have other sites on the server set up on their own IP and they work fine. 

I am not, however, responsible for the external (Godaddy?) DNS configuration
on this one. Is this something that can cause this problem?

Any advice would be much appreciated.

Regards,



Dick Dolby