Mail Server Errors

I get occasional errors with my mail server, especially with my outgoing mail. I checked the "mail" log and found a lot of this error:

and the following in the mail.err file

I have installed the "fam" package, and my hard drive is not full. I am getting sporadic errors that are really a problem. Please help.

 

It's a small hard drive, but only 19% of it is used:

 

Have you tried to disable AppArmor/SELinux?

 

No. How do I do that?

 

Which distribution do you use?

 

I use SuSe 9.2

 

There's no AppArmor or SELinux for that distribution, so that's not the problem.