ot a bit: sendmail and TO mx not found

Peter Farrow peter at farrows.org
Tue Sep 2 13:39:13 IST 2014

If the primary MX does not resolve , sendmail will not try a lesser MX 
record, because the best option is unresolvable, so it will return the 
message after checking and appending any search parameters given in 

This behaviour is by design, and you are trying to fix a problem which 
is inherently not yours to solve.

If the primary MX does not resolve : The domain is broken - so why try 
and work around that?

On 02/09/2014 13:19, ja at conviator.com wrote:
> hi
> its a bit OT but I hope its OK anyway. We are also using Mailscanner 
> as outbound scanner and see a problem that I cannot figure out - 
> probably some setting im missing.
> sometimes "we" send emails to a domain where the primary MX record 
> does not resolve. I would have expected that sendmail would just try 
> the next but instead it resolves to mxrecord.name.OURDOMAIN.COM (I 
> think) - it seams it appends our domain and then tries this server and 
> this server says "no thanks" so the delivery fails.
> I tried to lookup the MX myself using the same nameserver as the 
> mailscanner server is using - this fails so its not the DNS server 
> that appends something to make it resolveable or gives out a standard IP.
> I also checked the resolve file to check that there is not search 
> setting that would make it search our domain for a valid IP/lookup.
> how can I stop this behavior and make it try the next MX in line?
> best regards
> Jan
> -- 
> This message has been scanned for viruses and
> dangerous content by the *Togethia MailScanner* 
> <http://www.togethia.net/>, and is
> believed to be clean.
> Scanner:local
> -- 
> horizontal ruler
> Peter Farrow
> avatar 	
> ______________________
> Home: 	01249 654183
> Fax: 	01249 461 548
> Mobile: 	07799605617
> Skype: 	peter_farrow
> Web: 	www.peterfarrow.com <http://www.peterfarrow.com>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20140902/b465983a/attachment.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: orange_spacer.gif
Type: image/gif
Size: 57 bytes
Desc: not available
Url : http://lists.mailscanner.info/pipermail/mailscanner/attachments/20140902/b465983a/attachment.gif 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: avatar.gif
Type: image/gif
Size: 8198 bytes
Desc: not available
Url : http://lists.mailscanner.info/pipermail/mailscanner/attachments/20140902/b465983a/attachment-0001.gif 

More information about the MailScanner mailing list