|
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
|
RE: [PLUG] DNS issues preventing my mail server from working
|
try giving the mx record a fully qualifies domain -- ex: mail.mydomain.com.
(trailing '.' is important) and also make sure that mail.mydomain.com has an
A record --
mail IN A 1.2.3.4
and from above
@ IN MX 10 mail.mydomain.com.
and the mail server is not a CNAME (something in some rfc about this one).
I had the same problem with Exim a day or two ago, but only when sending
from a 192.168. address (internal network).
Also, your DNS servers all need to have their own A record.
-b
-----Original Message-----
From: plug-admin@lists.phillylinux.org
[mailto:plug-admin@lists.phillylinux.org]On Behalf Of Mike Leone
Sent: Thursday, October 02, 2003 2:54 PM
To: PLUG ML
Subject: [PLUG] DNS issues preventing my mail server from working
Here's my issue ... my postfix server is now rejecting all incoming mail,
because it says it can't find my domain.
Oct 2 11:18:22 handyman postfix/smtpd[14082]: connect from
mjl.contributionship.com[192.168.1.25]
Oct 2 11:18:22 handyman postfix/smtpd[14082]: 67CB628B5:
client=mjl.contributionship.com[192.168.1.25]
Oct 2 11:18:22 handyman postfix/smtpd[14082]: reject: RCPT from
mjl.contributionship.com[192.168.1.25]: 450 <mleone@contributionship.com>:
Recipient address rejected: Domain not found;
from=<mleone@contributionship.com> to=<mleone@contributionship.com>
Oct 2 11:18:31 handyman postfix/smtpd[14082]: lost connection after RCPT
from mjl.contributionship.com[192.168.1.25]
Oct 2 11:18:31 handyman postfix/smtpd[14082]: disconnect from
mjl.contributionship.com[192.168.1.25]
Here's why:
root@handyman:/etc/bind# nslookup contributionship.com
Note: nslookup is deprecated and may be removed from future releases.
Consider using the ig' or ost' programs instead. Run nslookup with
the -sil[ent]' option to prevent this message from appearing.
Server: 192.168.1.3
Address: 192.168.1.3#53
*** Can't find contributionship.com: No answer
root@handyman:/etc/bind#
But I don't understand that. This same box runs DNS for that domain (local
DNS); I can resolve individual hosts;
root@handyman:/etc/bind# nslookup mjl.contributionship.com
Note: nslookup is deprecated and may be removed from future releases.
Consider using the ig' or ost' programs instead. Run nslookup with
the -sil[ent]' option to prevent this message from appearing.
Server: 192.168.1.3
Address: 192.168.1.3#53
Name: mjl.contributionship.com
Address: 192.168.1.25
Zone file looks like this:
$TTL 38400
@ IN SOA ns.contributionship.com.
hostmaster.contributionship.com. (
2002070990
3H
1H
7D
640M )
@ IN TXT
"Contributionship.com internal DNS"
@ IN NS ns
@ IN MX 10 exchange
Any ideas of what I need to change to get this to work?
root@handyman:/var/cache/bind# dig -t host contributionship.com
;; Warning, ignoring invalid type host
; <<>> DiG 9.2.2 <<>> -t host contributionship.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20094
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;contributionship.com. IN A
;; AUTHORITY SECTION:
contributionship.com. 38400 IN SOA ns.contributionship.com.
hostmaster.contributionship.com. 2002070990 10800 3600 604800 38400
;; Query time: 2 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Thu Oct 2 15:02:55 2003
;; MSG SIZE rcvd: 88
Why no ANSWER section, for this domain? What do I need to add to my DNS
server, to get an ANSWER section, and make all this work?
_________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.netisland.net/mailman/listinfo/plug-announce
General Discussion -- http://lists.netisland.net/mailman/listinfo/plug
_________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.netisland.net/mailman/listinfo/plug-announce
General Discussion -- http://lists.netisland.net/mailman/listinfo/plug
|
|