Centos 4.4 DNS and/or Sendmail/Postfix issue

radiox · 09-19-2007, 07:16 PM

Hi all,

I am at the end of my research powers with this:

I run Centos 4.4 as a nameserver and webserver.

The problem is that I cannot get to work emails.
I can retrieve the emails with outlook but I cannot send any email from Outlook or from my linux to outside addresses. I can send emails internally.

After reading some posts I went and checked if my server can see the domain where i try to send emails.

Quote:

[root@piticu02 ~]# host fastcom.ie
fastcom.ie has address 81.17.252.25

Now, that's ok. My server is connected to the web.

my hosts file

Quote:

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 piticu02.site.com localhost.localdomain piticu02 localhost

my named.conf file

Quote:

options {
pid-file "/var/named/chroot/var/run/named/named.pid";
directory "/var/named/chroot/var/named";
auth-nxdomain no;
recursion no;
/*
* If there is a firewall between you and nameservers you want
* to talk to, you might need to uncomment the query-source
* directive below. Previous versions of BIND always asked
* questions using port 53, but BIND 8.1 uses an unprivileged
* port by default.
*/
// query-source address * port 53;
allow-transfer {none;};
};

//
// a caching only nameserver config
//
zone "." {
type hint;
file "named.ca";
};

zone "0.0.127.in-addr.arpa" {
type master;
file "named.local";
};

zone "1.168.192.in-addr.arpa" {
type master;
file "pri.1.168.192.in-addr.arpa";
};
zone "xx.xxx.xx.in-addr.arpa" {
type master;
file "pri.xx.xxx.xx.in-addr.arpa";
};

zone "xx.com" {
type master;
file "pri.xx.com";
};
zone "xxx.com" {
type master;
file "pri.xxx.com";
};
zone "xxxx.com" {
type master;
file "pri.xxxx.com";
};
zone "xxxxxx.com" {
type master;
file "pri.xxxxx.com";
};

//// MAKE MANUAL ENTRIES BELOW THIS LINE! ////
logging {
channel bindlog {
file "/var/log/bindlog" versions 5 size 1m;
print-time yes;
print-category yes;
print-severity yes;
};
category xfer-out { bindlog; };
category xfer-in { bindlog; };
category security { bindlog; };
category panic { bindlog; };
category insist { bindlog; };
category response-checks { bindlog; };};

my pri.xxxxx.com~ file

Quote:

$TTL 1D
@ IN SOA ns1.xxxx.com. admin.xxxxx.com. (
2007092001 ; serial, todays date + todays serial #
28800 ; refresh, seconds
7200 ; retry, seconds
604800 ; expire, seconds
86400 ) ; minimum, seconds
;
NS ns1.xx.com. ; Inet Address of name server 1
NS ns2.xx.com. ; Inet Address of name server 2
;

xxxxx.com. MX 0 mail.oprishosting.com. ;Primary Mail Exchanger

xxxxx.com. A xx.xxx.xx.xx
www A xx.xxx.xx.xx
mail A xx.xxx.xx.xx

xxxxx.com. TXT "v=spf1 a mx ptr ~all"

;;;; MAKE MANUAL ENTRIES BELOW THIS LINE! ;;;;
www IN CNAME node1 ;- Define the webserver "www" to be node1.
ftp IN CNAME node1 ;- Define the ftp server to be node1.

I have Webmin, Postfix and Sendmail. I am not sure what is best to use. I tried running Sendmail and then postfix but no different results.

I have made some changes in the zone file , updated the serial and date, restarted named and no luck.

I am stuck at this . Can anyone bring me to the right track?

All domains hosted are domains I can play with so no worries if you ask me to do something drastic...

Regards,

jordy5 · 09-20-2007, 03:18 AM

Could you post some logging, like /var/log/maillog, arround the time you try sending a mail.

radiox · 09-20-2007, 06:02 AM

Yes,

Quote:

Sep 20 11:56:51 piticu02 pop3-login: Login: web22_nick [::ffff:88.151.81.26]
Sep 20 11:59:32 piticu02 sendmail[17484]: l8KAxTFh017484: from=root@piticu02.xxx.com, size=489, class=0, nrcpts=1, msgid=<1190285969.17473@piticu02.xxx.com>, relay=root@localhost
Sep 20 11:59:32 piticu02 sendmail[17487]: l8KAxWfh017487: from=<root@piticu02.xxx.com>, size=628, class=0, nrcpts=1, msgid=<1190285969.17473@piticu02.xxx.com>, proto=ESMTP, daemon=MTA, relay=piticu02.xxx.com [127.0.0.1]
Sep 20 11:59:32 piticu02 sendmail[17484]: l8KAxTFh017484: to=nick@xx.com, ctladdr=root@piticu02.xxx.com (0/0), delay=00:00:03, xdelay=00:00:00, mailer=relay, pri=30489, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (l8KAxWfh017487 Message accepted for delivery)
Sep 20 11:59:32 piticu02 sendmail[17488]: l8KAxWfh017487: to=nick@xx.com, ctladdr=<nick@xx.com> (8/0), delay=00:00:00, mailer=local, pri=120628, dsn=5.1.1, stat=User unknown
Sep 20 11:59:32 piticu02 sendmail[17488]: l8KAxWfh017487: to=<nick@xx.com>, delay=00:00:00, mailer=local, pri=120628, dsn=5.1.1, stat=User unknown
Sep 20 11:59:32 piticu02 sendmail[17488]: l8KAxWfh017487: l8KAxWfh017488: DSN: User unknown
Sep 20 11:59:32 piticu02 sendmail[17488]: l8KAxWfh017488: to=<root@piticu02.xxx.com>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31894, dsn=2.0.0, stat=Sent
Sep 20 11:59:42 piticu02 pop3-login: Login: web22_nick [::ffff:88.151.81.26]

i tried to send an email using webmin from root to an account internally.

I get this:

Quote:

The original message was received at Thu, 20 Sep 2007 11:59:32 +0100
from piticu02.xxx.com [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<nick@xx.com>
(reason: 550 5.1.1 User unknown)
nick@xx.com
(reason: 550 5.1.1 User unknown)
(expanded from: <nick@xx.com>)

----- Transcript of session follows -----
550 5.1.1 nick@xx.com... User unknown
550 5.1.1 <nick@xx.com>... User unknown

jordy5 · 09-20-2007, 06:17 AM

Been ages since I manually configured mail accounts.

You said you couldn't send emails. But the errors show that the "received" mail account doesn't exists. While this server is set to be the receiver for "oprishosting.com", but doesn't have a user/mailbox "nick".

Please review your configuration, following article could help you with that (Postfix):

http://www.akadia.com/services/postfix_mta.html

radiox · 09-20-2007, 05:04 PM

I had multiple issues, main one was that the server was not listening on the external IP address.

Thank you for your time.