It is what this "mkierepka"

Hello with all

Somebody among you can explain me this to use, who is not in my list of user......

MM

 

Somebody with IP-address 87.116.213.16 and user ID mkierepka tries to login into your server to receive/send mail.

Because the username does not exists on your server the login failed.

 

Ok, is how I remove this to use then, so that it me but not each time that there does not exist in my logs.....

MM

 

There's not much you can do about this. You could block the IP address, if you want:

http://www.howtoforge.com/forums/showpost.php?p=38142&postcount=4