is it possible that IMON damages MIME headers?

one of my customers has a few small problems.
Sometimes, no information can be seen anymore in the headers of a delivered e-mail. The content of the e-mail body is still OK, even the attachment is still OK.
So it means: no sender, no subject, no receipient. those fields are all empty.
It does not happen very often, but I guess it happens one out of every 500 messages.
So not very much, but they find it a little annoying...
Assuming the headers had to be there to be delivered by a mailserver, there can only be a few options i guess:
1 headers are corrupter during transport (mailserver > popbox > client)
2 headers are corrupted by receiving client
or headers are corrupted by NOD32 (runs on client)??

So therefore my question:
what can, and what can't IMON do with MIME headers.
IMON is configured only to edit subject and body IF infection is found.
For the record: there is noting mentioned in NOD32 logs.

hopefully somebody knows more about this....

 

IMON should not affect emails in such a way. I'd suggest they set the IMON POP3 compatibility level to maximum compatibility. In this mode, IMON will not intervene in emails at all, it will only inform you that a particular attachment is infected, with no option to delete or rename it.

 

thnx marcos,

i suggested this already to my customer, but I was anxious about what is possible, and what is not.
sorry for slow reponse, I've been rather busy

greetings from Holland / 28 degrees