Long about 08:21 AM 2/23/2011, Eric Johnson sent the following: >1 02/22 02/22 [log in to unmask] > Last error: 5.1.1 550 5.1.1 > <[log in to unmask]>: Recipient > address rejected: User unknown in relay recipient > table > >I had 20 errors last night of this type. Same domain but different >addresses and >the addresses seem to be in hex. Looks like spam backscatter. -- DCP