Please see
http://www.experts-exchange.com/Operating_Systems/Linux/Q_20991190.htmlI have been trying to help him sort out an email problem and I think I have narrowed it down to the Sendmail configuration because DNS lookups work but sendmail seems to be unable to resolve.
[root@localhost root]# mailq
/var/spool/mqueue (5 requests)
-----Q-ID----- --Size-- -----Q-Time----- ------------Sender/Recipie
nt--------
---i4FND0Q
V005975 129 Sun May 16 01:13 <nobody@localhost.localdom
ain>
(host map: lookup (maltanet.net): deferred)
<fbi800@maltanet.net>
i4EMMuZW003531 129 Sat May 15 00:22 <nobody@localhost.localdom
ain>
(host map: lookup (CryptIRC.cjb.net): deferred)
<Luke@CryptIRC.cjb.net>
i4EM0qZW003455 129 Sat May 15 00:00 <nobody@localhost.localdom
ain>
(host map: lookup (darkengel.org): deferred)
<darkengel@darkengel.org>
i4EAcY85005614 129 Fri May 14 12:38 <nobody@localhost.localdom
ain>
(host map: lookup (pakwatan.com): deferred)
<LordMetal@pakwatan.com>
i4DN0s85003808 129 Fri May 14 01:00 <nobody@localhost.localdom
ain>
(host map: lookup (pakwatan.com): deferred)
<LordMetal@pakwatan.com>
Total requests: 5
[root@localhost root]# dig maltanet.net mx @217.145.4.33
; <<>> DiG 9.2.1 <<>> maltanet.net mx @217.145.4.33
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10530
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 4
;; QUESTION SECTION:
;maltanet.net. IN MX
;; ANSWER SECTION:
maltanet.net. 26 IN MX 5 vmail.maltanet.net.
maltanet.net. 26 IN MX 10 mail2.maltanet.net.
;; AUTHORITY SECTION:
maltanet.net. 172498 IN NS engine2.maltanet.net.
maltanet.net. 172498 IN NS engine4.maltanet.net.
;; ADDITIONAL SECTION:
vmail.maltanet.net. 2389 IN A 194.158.37.213
mail2.maltanet.net. 401 IN A 194.158.37.195
engine2.maltanet.net. 82102 IN A 194.158.37.211
engine4.maltanet.net. 69099 IN A 194.158.37.196
;; Query time: 245 msec
;; SERVER: 217.145.4.33#53(217.145.4.
33)
;; WHEN: Mon May 17 19:57:44 2004
;; MSG SIZE rcvd: 182
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