From Bugzilla Helper:
User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.4.5-pre3 i586)

Description of problem:
Setgid flag to /usr/bin/procmail should be back.

How reproducible:
Always

Steps to Reproduce:
1. Install procmail from RH 7.1
2. Install postfix from RH 7.1 powertools (instead sendmail)
3. Try to send mail to new created user (which one has not own mailbox
in /var/spool/mail/$user)
	

Actual Results:  As You know, postfix is running as user mail (not root)

<test.pl>: can't create user output file. Command output:
    procmail: Couldn't create "/var/spool/mail/test" procmail: Lock failure
on "/var/spool/mail/test.lock" procmail: Error while writing to
"/var/spool/mail/test"

/var/spool/mail/test didn't exisit before delivered this mail


Additional info:

To fix this problem chmod g+s /usr/bin/procmail. 

ps
Sorry for my borken english. :(