RBL Check timed out

[Desai, Jason]

Hello.

Yesterday I received a bunch of "RBL Check  timed out and was killed"
messages in mail.log.  Here is a sample output from my logs:

$ grep "MailScanner\[6171\]: RBL" /var/log/mail.log
Mar 24 11:47:53 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 1 of 7
Mar 24 11:54:50 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 2 of 7
Mar 24 11:55:01 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 3 of 7
Mar 24 11:59:44 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 4 of 7
Mar 24 12:01:06 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 5 of 7
Mar 24 12:03:40 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 6 of 7
Mar 24 12:06:53 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 7 of 7
Mar 24 12:10:07 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 8 of 7
Mar 24 12:11:20 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 9 of 7
Mar 24 12:12:07 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 10 of 7
Mar 24 12:16:45 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 11 of 7
Mar 24 12:20:09 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 12 of 7
Mar 24 12:45:20 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 13 of 7
Mar 24 12:46:26 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 14 of 7
Mar 24 12:49:00 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 15 of 7
Mar 24 12:50:14 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 16 of 7
Mar 24 13:56:02 dimstar MailScanner[6171]: RBL Check  timed out and was
killed, consecutive failure 17 of 7

In my MailScanner.conf file, I have

Spam List =

I'm pretty sure that I tried commenting out the Spam List entry too, and
I've seen similar messages.  I am trying to prevent MailScanner from doing
any RBL checks (I only want SpamAssassin to do this).  I don't understand
why it would be trying to do RBL checks, and why it keeps on failing even
after 7 consecutive failures.  I am running MailScanner 4.12-2.  Is this a
bug in the code or do I have something configured wrong?

Jason