[Mimedefang] Bug in action_notify_sender?

[Mickey Hill]

Hi all,

Here's the problem I encountered this morning.  Has anyone else noticed
this?  A call to action_notify_sender() with $Sender = '<>' results in a
somewhat ungraceful exit from the multiplexor and a tempfail from
mimedefang.

(This was all a result of an incoming message with the W32/Hybris.gen at MM
"Snowhite" virus.)

Mar 15 10:05:25 mail mimedefang[10235]: Error from multiplexor: <>...
User unknown
Mar 15 10:05:25 mail sendmail[10234]: g2FG5KVO010234: Milter: data,
reject=451 4.7.1 Please try again later
Mar 15 10:05:25 mail sendmail[10234]: g2FG5KVO010234:
to=<bill at rudolphfreight.com>, delay=00:00:04, pri=30471, stat=Please try
again later

After I added this to mimedefang-filter, the problem was solved.

if ($Sender ne '<>') {
    action_notify_sender( ... );
}

Have I identified the problem correctly as being in
action_notify_sender?  Should we modify the code for
action_notify_sender to handle errors better?

-------------------------
Mickey Hill
Rudolph's Inc
2021 Rob Mason Rd
PO Box 69
Murray KY 42071 USA
Phone (270) 753-0686 x124
Fax   (270) 753-0753
mickey at rudolphtire.com
www.rudolphtire.com