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Old 11-20-2012, 09:54 AM   #1
Vimuth
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Registered: Sep 2009
Posts: 56

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Basic postfix configuration


Hello good genlemen,
Im trying to setup a very basic postfix mailserver with a minimal configuration. I have 2 RHEL6 hosts have been set up in virtualbox whos hostnames are "box1.mydomain.rock" and "box2.mydomain.rock". Postfix server is installed on box1.X, selinux/firewalls disabled. In box2.X again postfix is installed with no configuration changes. Mails are getting bounced when I try to send a mail to a user in box1(mail server itself) from box1. following are the details.

NOTE: I dont have a local dns server configured therefore I manipulate the /etc/hosts file.

---this is the server main.cf
Code:
myhostname = box1.mydomain.rock
mydomain = mydomain.rock
inet_interfaces = all
inet_protocols = all
mydestination = $myhostname, localhost.$mydomain, localhost
mynetworks = 192.168.1.0/24, 127.0.0.0/8

/etc/hosts file of box1(mail server)

Code:
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.68 box1 box1.mydomain.rock      #mail server
192.168.1.70 box2 box2.mydomain.rock      #the client box that im sending the mail from

----/etc/hosts file of box2(the machine the mail is being sent)

Code:
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.68 box1 box1.mydomain.rock
192.168.1.70 box2 box2.mydomain.rock

---mail log of box2( the client that is trying to send the mail to vimuth@box1.mydomain.rock
Code:
Nov 20 08:14:34 box2 postfix/pickup[2551]: 17D8F9D86: uid=0 from=<root>
Nov 20 08:14:34 box2 postfix/cleanup[2562]: 17D8F9D86: message-id=<20121120024434.GA2556@box2.mydomain.rock>
Nov 20 08:14:34 box2 postfix/qmgr[2552]: 17D8F9D86: from=<root@box2.mydomain.rock>, size=426, nrcpt=1 (queue active)
Nov 20 08:14:34 box2 postfix/smtp[2564]: 17D8F9D86: to=<vimuth@box1.mydomain.rock>, relay=none, delay=0.11, delays=0.03/0.01/0.07/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=box1.mydomain.rock type=AAAA: Host not found)
Nov 20 08:14:34 box2 postfix/cleanup[2562]: 31C779FCD: message-id=<20121120024434.31C779FCD@box2.mydomain.rock>
Nov 20 08:14:34 box2 postfix/qmgr[2552]: 31C779FCD: from=<>, size=2358, nrcpt=1 (queue active)
Nov 20 08:14:34 box2 postfix/bounce[2565]: 17D8F9D86: sender non-delivery notification: 31C779FCD
Nov 20 08:14:34 box2 postfix/qmgr[2552]: 17D8F9D86: removed
Nov 20 08:14:34 box2 postfix/local[2566]: 31C779FCD: to=<root@box2.mydomain.rock>, relay=local, delay=0.02, delays=0/0.01/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Please good people I need to figure this out before this Friday before I sit for the RHCE exam.

/V
 
Old 11-20-2012, 01:37 PM   #2
lrtward
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Registered: Feb 2011
Distribution: CentOS, Ubuntu
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Host or domain name not found. Name service error for name=box1.mydomain.rock

When you are logged into box2, and you do
Code:
dig -t mx box1.mydomain.rock
What is the result?
 
Old 11-23-2012, 04:38 AM   #3
r0b0
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Registered: Aug 2004
Location: Europe
Posts: 602

Rep: Reputation: 49
Postfix, by default, will not work nicely with /etc/hosts defined hosts. You need to force it to stop trying DNS lookups, see disable_dns_lookups directive.
 
1 members found this post helpful.
Old 12-31-2012, 10:42 PM   #4
Vimuth
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Registered: Sep 2009
Posts: 56

Original Poster
Rep: Reputation: 15
thank you all and I managed to get this done. As per Mr r0's comments I set up a local dns server and put in a mx record and that solved my my problem. Thanks a lot.
 
  


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