Input/Output Error

Dhawal Doshy dhawal at
Fri Jun 23 15:45:32 IST 2006

Matt Standish wrote:
> Hello all.
> After running Mailscanner for a while (I haven't been able to find a
> constant variable) MailScanner (postfix) stops delivering or receiving
> mail. I receive an Input/Output error whenever I type a command at the
> terminal and I am forced to reboot. I am thinking I am either running
> too many processes or opening to many files.  Anyone know a kernel
> variable I can try and set?
> I am running

> Suse 10.0
> MailScanner 4.53.6-1
> Postfix 2.2.5
> SA 3.1.0
> ClamAV 0.88
> Bind is running for local caching
> I am using just the database logging portion of MailWatch
> I have a ram drive at /var/spool/MailScanner/incoming
> The server is a
> Dual PIV 1.8Ghz Xeon
> 4G Ram
> 120G RAID 5 (SCSI 10k RPM) (ReiserFS)
> I havce nothing in /var/log/messages, which I am assuming is because
> the file system can't be written too.

An I/O error generally indicates that you either have a bad disk. It 
could also mean a bad memory chip (since you are using a ramdisk).

Try using a remote syslog server for some time. 'dmesg' could give you a 
hint here.. see if your logs indicate anything.

egrep 'error|fatal|panic' /var/log/mail*
egrep 'error|fatal|panic' /var/log/messages

Also check your system if it has been compromised..

- dhawal

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