Courier-mta strange report!!!!
I have checked logs on server recently ,I found the strange lins under courier-mta sction as:
OP3, IMAP] Logins:
====================
User | Logins | Size
---------------------------------------------------- | ------ | -----------
??? domain=??? | 91 |
---------------------------------------------------------------------------
91 | 0
**Unmatched Entries**
Logout user=??? domain=??? host=UNKNOWN: 53 Time(s)
---------------------- courier-mta End -------------------------
Dose anybody know what is this?
Dose this mean anybody is trying someting to harm the system?
Please help !!!
Thank you.!!!
