阻止spam拦截员工发送的邮件
First locate simcontrol file at /var/qmail/control

The default file looked like this:

:clam=yes,spam=yes,spam_hits=10,attach=.mp3:.src:.bat:.pif:.exe

If you want to just stop spam processing for a single user you have to put:

user@domain.com:clam=yes,spam=no,spam_hits=10

in front of existing line, result:

user@domain.com:clam=yes,spam=no,spam_hits=10
:clam=yes,spam=yes,spam_hits=10,attach=.mp3:.src:.bat:.pif:.exe

for an entire domain just put:

domain.com:clam=yes,spam=no,spam_hits=10

Save an run #qmailctl cdb