sendmail queue growing, host name lookup fails

[Eliot Stock]

yes, sorry, forgot to mention I already have that in there too.

Eliot.

Paul Howarth wrote:

>On Sun, 2004-11-14 at 13:04 +0000, Eliot Stock wrote:
>  
>
>>I just moved from FC2 to FC3 and I think I have my mail sendmail config
>>
>>just as it was for FC2. Sendmail receives mail for local delivery just 
>>fine, but outgoing mail does not send.
>>
>>I use my ISPs SMTP server as a smart host. In sendmail.mc:
>>
>>
>>define(`SMART_HOST',`relay.plus.net')
>>
>>
>>'mailq' shows a bunch of mail not being sent due to host name lookup 
>>failures:
>>
>>
>>iACC9XnN003813*    6874 Fri Nov 12 12:14 MAILER-DAEMON
>>                (Deferred: Name server: relay.plus.net: host name 
>>lookup fail)
>>                                        <accounts at realcontacts.com>
>>iACB9XVo003702     8287 Fri Nov 12 11:12 MAILER-DAEMON
>>                (Deferred: Name server: relay.plus.net: host name 
>>lookup fail)
>>                                        
>><gemm.com-at-eliotstock.com at errors.gem
>>
>>
>>If I run sendmail in test mode to test the name lookups, I get this:
>>
>>[root home ~]# echo '/mx relay.plus.net.' | sendmail -bt -d8.8
>>ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
>>Enter <ruleset> <address>
>>    
>>
>>>getmxrr(relay.plus.net., droplocalhost=0)
>>>      
>>>
>>getmxrr: res_search(relay.plus.net.) failed (errno=110, h_errno=2)
>>getmxrr(relay.plus.net.) returns -1 value(s):
>>
>>
>>[root home ~]# echo '/map host relay.plus.net.' | sendmail -bt -d8.8
>>ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
>>Enter <ruleset> <address>
>>    
>>
>>>map_lookup: host (relay.plus.net.) dns_getcanonname(relay.plus.net., 
>>>      
>>>
>>trymx=1)
>>dns_getcanonname: trying relay.plus.net. (AAAA)
>>NO: errno=110, h_errno=2
>>dns_getcanonname: trying relay.plus.net. (A)
>>YES
>>dns_getcanonname: relay.plus.net
>>returns relay.plus.net. (0)
>>
>>
>>And indeed I can ping relay.plus.net ok, but it has no MX record - not 
>>sure if that's the problem. Does sendmail need to lookup an MX record 
>>for the smart host before it sends? This worked on FC2 I think, and my 
>>ISP's DNS records haven't changed.
>>    
>>
>
>Did you try
>
>define(`confBIND_OPTS', `WorkAroundBrokenAAAA')dnl
>
>in your sendmail.mc as Alexander suggested earlier?
>
>Paul.
>  
>