I am running Lotus Domino server 4.6.7 with the SMTP MTA service, and it is creating an att*.unk file every time an email is received with an attachment: e.g. 3 emails received with attachments creates 3 files in the work path folder called att1.unk, att2.unk, att3.unk etc.
I was running 4.6.3 before and this was not occurring.
The mail recipients seem to be getting the attachments OK, so it seems to be mostly a clean-up problem or something?
Any ideas? It is just annoying to have to clean up the folder all the time...