Hallo Asai,MUA informations are not passed trough POP or IMAP protocol
therefore there is no way to get it recorded into logs as I know.SMTP is almost
the same but MUAs are known to insert a range of different mime headers and
values into generated messages.In theory you may try to log them using an
header_checks rule resulting into a warning (or at least i recall something
similar).Anyway it's a journey i don't suggest because you will likely result
in an endless chasing of MUAs list their behaviors and obviously....
exceptions. Paolo
