rootmail: Cannot open /var/log/sa/sa26: No such file or directory

[NNNils]

What does this error mean, I get it about every 15 minutes:

Cannot open /var/log/sa/sa26: No such file or directory


Cannot open /var/log/sa/sa28: No such file or directory

The number behind sa varies, but all files are there.

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[ciphervendor]

Perhaps spam assassin is attempting to write a log file? If so, make sure a directory exists with correct ownership/permissions to see what gets written there.

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[NNNils]

The sa dir was gone, after recreation error dissappeared.

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[nyjimbo]

Check to see if your other logs or directories are gone too. If so then you might want to check to see if you have been hacked.

Its rare that a directory will blow away unless it was done by a disk check/cleanup like fsck. Often when a hacker gets into a system they will go and blow out /var/log to hide what they did.



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[NNNils]

Compared to another server also are missing:

cups
httpd
samba
squid
vbox

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[nyjimbo]

What about the normal log files themselves, like maillog, messages, etc ?.

I run freebsd so I dont know if you would have the same naming conventions, but I would think there would be several dozen files in the main /var/log

Also look in your /tmp for anything unusual. You should also check /root for anything updated in the past 24 hours
and if you have console access run a "last" to see who was on recently.

 

[NNNils]

Yes all the usual files like messages, maillog, security etc are there.

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[nyjimbo]

I would still be a bit concerned. See if any new users were added to the main passwd file in /etc, do a ps ax to see if anything weird is running.

If you are running process accounting, run a :

sa -a | more

see if anything weird is listed. If you are not familiar with alot of the programs on your system they will all look weird, but chances are if a hacker ran alot of crap or left something running you might see it in "sa".

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