[rt-users] weird "Draining Input" mail loop

[bill at daze.net]

We upgraded from 3.0.0 to 3.0.2pre5 over the weekend.

Yesterday afternoon, we started getting an e-mail to our abuse address
that looks like a virus.  We were getting the same e-mail from the same
person over and over so at first I thought their system was in a loop.
When I looked into it futher, I discovered that we only received the
message once.  The loop is within RT.  RT successfully delivers the
message, however the following two lines appear in the maillog over and
over (for each delivery):


timeout waiting for input from local during Draining Input

to="|/usr/local/rt3/bin/rt-mailgate --queue abuse-reports --action
correspond --url http://localhost/", ctladdr=<##STRIPPED##> (26/0),
delay=07:50:23, xdelay=00:03:02, mailer=prog, pri=1864651, dsn=4.0.0,
stat=Deferred: prog mailer (/bin/sh) exited with EX_TEMPFAIL


We have RT set to truncate attachements at 8k (if we could we would turn
off attachements completely but since RT treats the body of the message as
an attachment we can't so that):


Set($MaxAttachmentSize , 8192); # 8k
Set($TruncateLongAttachments , 1);
Set($DropLongAttachments , 1);
Set($SendmailArguments,"-oi -t -ODeliveryMode=b -OErrorMode=m");


Looking in the mail queue, I see the message is about 392k:


-rw-------  1 root  daemon  393671 May  6 16:15 dfh46NFISb055113
-rw-------  1 root  daemon    1529 May  7 10:35 qfh46NFISb055113


I deleted the message from the queue to kill the loop.

I'm wondering if the size of the message is causing the problem.  We have
received other large messages about this size (truncated of course) while
using 3.0.0 without any problems.  Any ideas?

Our configuration:
FreeBSD 4.7 / rt3.0.2pre5 / Sendmail 8.12.6p2 / mysql 3.23.52 (InnoDB tables)
Apache/1.3.27 (Unix) mod_ssl/2.8.11 OpenSSL/0.9.6g mod_fastcgi/2.2.12

Regards,
Bill