Strange SMTP Addresses

[grabrail]

Hi

I have discovered a number of strange SMTP addresses attached to various domain accounts and groups, and also public folders, No on here has created these addresses.

An example is 2b5cfb@domain.com
another is 2@domain.com

Any ideas where they might have come from.

Thanks in advance.

 

[znetbiz]

Have you or anyone installed any 3rd party tools or utilities? AV/SPAM/FAX ....etc