Headers are not inserted.

[Andreas Neustifter]

Hi List!

Sometimes a email gets forwarded from our spam filter (single machine,
amavis+postfix+spamassassin+clamav, pretty simple setup) to the
exchange server that have no spam headers (although
'$sa_tag_level_deflt  = -999') and even have no received headers.
Those mails do not appear in mail.log, but they do appear in the
exchange logs as received from the spam filter.

It seems as if those mails are materializing from thin air on the spam filter.

Any ideas what could be the problem in this case? (I have checked the
access logs, nothing out of the ordinary...)

Thanks, Andi