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Old 01-11-2008, 01:57 AM   #1
Rainel
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linux mail server cannot receive messages


Hello,

First of all I'm not expert when it comes to Linux I'm just a newbie and still studying but now seems my head will explode and my manager stresses me up on this problem..

I'm maintaining our system since our sysad resigned last year he just left some documentations about passwords on every server and now
our email server(using squirrelmail)cannot recieve messages. I google it 4 2 days but still no luck.I dont know where to start.

Any help is highly very much appreciated.

Best Regards,

Rainel
 
Old 01-11-2008, 02:26 AM   #2
odcheck
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check out the /var/log/maillog for errors

is there a cron job running for fetchmail? How does the server get the mails`?

which distribution you're using?
 
Old 01-11-2008, 02:38 AM   #3
Rainel
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i cant see an error messages in my /var/log/maillog
its almost the same like the one below

"Jan 11 03:28:20 servername vpopmail[28478]:vchkpw-pop3: (PLAIN)login success username@domain.com: ipaddress"

i dont know how to check if i have fetchmail running in cronjob,how do I check the cronjob anyway so that u can check it for sometimes

I'm using centos 3 with squirrelmail installed on it.

Thanks for the quick reply..
 
Old 01-11-2008, 02:53 AM   #4
odcheck
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so squirrelmail is a webmail service.

There is a MTA (Mail Transfer Agent)/SMTP-Server is used for delivering mails from one system to another.
like: sendmail, postfix etc.
Then there is a MDA (Mail Delivery Agent) it delivers the recievied mails on the local system to the specified users.
like: procmail so that an email client like thunderbird mail or outlook or evolution can get the mails.
and there is an MRA (Mail Retrieval Agent) this is your email client see above.
and then you will have something like IMAP-/POP3-Server like: dovecot.

As I understand the sysad left the company w/o good documentation so we must figure out what you're using.
It should be reported in the log files. /var/log/messages and /var/log/maillog
It is not recommended to run kind of such service as root but who know what the sysad configured if it's not documented.
So login as root and do a
Code:
crontab -l
there you can see which jobs are running as root user.
maybe fetchmail is used to get the mails. So there could be somewhere a .fetchmailrc ... but he could have named it also "busfahrermails" this is for example the default fetchmail config. (.fetchmailrc)
 
Old 01-11-2008, 03:12 AM   #5
Rainel
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here is my crontab -l look like:


#*/8 * * * * root /etc/apf/ad/antidos -a >> /dev/null 2>&1
40 3 * * * * /usr/local/etc/logcheck.sh
#1 1 * * * (cd /scripts/; sh runtw.sh)
0 3 * * * (cd /usr/bin/; ./rkhunter --cronjob | mail -s "HOSTNAME RKHUNTER output" admin@domain.com)
0 1 * * * rkhunter --version
0 1 15 * * rkhunter --update
10 3 * * * (cd /usr/bin/; ./chkrootkit | mail -s "HOSTNAME CHKROOTKIT output" admin@domain.com)
0 4 * * * (cd /usr/sbin/; ./tripwire --check | mail -s "HOSTNAME Tripwire OUTPUT" admin@domain.com)
30 2 * * * (cd /scripts/; sh spamtraining.sh)
0 2 * 1 * (cd /scripts/qmail/; sh qmail-backup-2.7.sh)

i find very hard to type it coz i can't open a terminal to my mail server

thanks for the reply odcheck
 
Old 01-11-2008, 04:23 AM   #6
odcheck
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RKHUNTER = Rootkit detection
Tripwire for Servers is the solution for IT organizations requiring only server monitoring, with detailed reporting and optional centralized server management across Linux/UNIX/Windows platforms.

So there we go... qmailis used as MTA.

are there any logs regarding qmail?
cat /var/log/messages | grep -i qmail


--LINK http://www.inter7.com/index.php?page=vpopmail

Last edited by odcheck; 01-11-2008 at 04:27 AM. Reason: Added a Link
 
Old 01-11-2008, 04:33 AM   #7
Rainel
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this is just simply like this with a random date and time.
Actually there are so many of them but if I type them all maybe I will finish it an hour.

January 10 23:30:28 host rc: Stopping qmail: succeeded
January 10 23:30:28 host rc: Starting qmail: succeeded
January 10 23:30:28 host qmail: .
January 10 23:30:28 host qmail: logging
January 10 23:30:28 host rc: Starting qmail: svscan
 
Old 01-11-2008, 04:50 AM   #8
odcheck
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do you got anything like that ?

/home/vpopmail/domains/domainname/username/Maildir

query with this command as root

Code:
find / -name vpopmail
this will listen averything regarding the location of the Maildirs.

Also you could try a
Code:
/etc/init.d/svscan restart
as well.
 
Old 01-11-2008, 04:56 AM   #9
Rainel
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if I type "find / -name vpopmail" I got this

_____________________________________________
/etc/log.d/scripts/services/vpopmail
/var/lib/mysql/vpopmail
/home/vpopmail
___________________________________________

then if this one I got this message
/etc/init.d/svscan restart

-bash: /etc/init.d/svscan: No such file or directory
 
Old 01-11-2008, 05:04 AM   #10
odcheck
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Quote:
then if this one I got this message
/etc/init.d/svscan restart

-bash: /etc/init.d/svscan: No such file or directory
depends on the Distribution you're using, thats what I've asked already but you didn't yet answer.
If you don't know a little help would be
Code:
uname -a
cd to this /home/vpopmail directory
there you should find something like "domains/domainname/username/Maildir"
I want to know if the mails are recievied but maybe not delivered.
Therefor check if in the regarding Maildir/new Directory any mails are located.
 
Old 01-11-2008, 05:18 AM   #11
Rainel
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im very sorry, here it is uname -a

Linux hostname.com.ph 2.6.9-67.0.1.ELsmp #1 SMP Wed Dec 19 16:01:12 EST 2007 i686 i686 i386 GNU/Linux


I navigate "/home/vpopmail/domains/hostname.com.ph/myname/Maildir/new"
then type "ls" command but it was empty.

Inside of Maildir

1178504930.qw
courierimapkeywords - directory
courierimapsubscribed
courieriampuiddb
cur - directory
maildirsize
new - directory
tmp - directory

that's all odcheck
 
Old 01-11-2008, 05:30 AM   #12
odcheck
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This looks like a mail
"1178504930.qw"

Code:
less 1178504930.qw
"less" Should show you the content.

This "svscan" could be somewhere else in your system
so again
Code:
find / -name svscan
 
Old 01-11-2008, 05:35 AM   #13
Rainel
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find / -name svscan

/command/svscan
/usr/bin/svscan


less 1178504930.qw

ip_addr=222.222.222.222&returntext=&returnhttp=
1178504390.qw (END)

that's all odcheck
 
Old 01-11-2008, 05:40 AM   #14
odcheck
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so okay then try a
Code:
/usr/bin/svscan restart
that should restart the service.
 
Old 01-11-2008, 05:45 AM   #15
Rainel
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typing /usr/sbin/svscan restart
give the following message odcheck

-bash: /etc/init.d/svscan: No such file or directory
 
  


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