[Mimedefang] Authentication warnings and "cannot write" errors

[Cormack, Ken]

Dear group,

Poking through my maillog, I'm seeing log entries that appear below.  As I
read mimedefang.pl, there are a few places where it looks like MIMEDefang is
originating new messages, and sending them, addressed from the defang user,
using the "-f" switch for sendmail.

In which case, it is failing to write the message to my /var/spool/mqueue
directory, which has the following perms:
drwxr-xr-x    2 root     mail       299008 Mar 11 16:20 mqueue

Should I make the "defang" user a member of group "mail", and open up write
privalegdes to the group, on the mqueue directory?

Thanks for any advice.

Ken

Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:
Authentication-Warning: mail01.roadway.com: defang set sender to
defang at roadway.com using -f
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463: SYSERR(defang):
collect: Cannot write ./dfi2BKlb11031463 (bfcommit, uid=515, gid=510):
Permission denied
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:
from=defang at roadway.com, size=319, class=0, nrcpts=1, relay=defang at localhost
Mar 11 15:47:36 mail01 mimedefang-multiplexor: Slave 6 stderr: collect:
Cannot write ./dfi2BKlb11031463 (bfcommit, uid=515, gid=510): Permission
denied 
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:   0: fl=0x0,
mode=10600: FIFO: dev=0/5, ino=53234656, nlink=1, u/gid=515/515, size=0
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:   1: fl=0x1,
mode=10600: FIFO: dev=0/5, ino=53171457, nlink=1, u/gid=515/515, size=0
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:   2: fl=0x1,
mode=10600: FIFO: dev=0/5, ino=53171457, nlink=1, u/gid=515/515, size=0
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:   3: fl=0x2,
mode=140777: SOCK localhost->[[UNIX: /dev/log]]
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463:   4: fl=0x1,
mode=20666: CHR: dev=72/11, ino=30115, nlink=1, u/gid=0/0, size=0
Mar 11 15:47:37 mail01 sendmail[31463]: i2BKlb11031463: SYSERR(defang):
queueup: cannot create queue file ./qfi2BKlb11031463, euid=515: Permission
denied
Mar 11 15:47:36 mail01 mimedefang-multiplexor: Slave 6 stderr: queueup:
cannot create queue file ./qfi2BKlb11031463, euid=515: Permission denied