Subject: Re: new sendmail spooling and dns
To: Steven M. Bellovin <firstname.lastname@example.org>
From: Thomas Miller <email@example.com>
Date: 03/31/2003 21:53:00
> It's been a long time since I've used sendmail, but 'sendmail -q'
> is (according to the man page) the way to attempt delivery of each
> queued message.
> --Steve Bellovin, http://www.research.att.com/~smb (me)
> http://www.wilyhacker.com (2nd edition of "Firewalls" book)
Sendmail -q seems to work fine respecting the mail in
/var/spool/mqueue. But it doesn't move the mail in
/var/spool/clientmqueue. If DNS lookup has been
deferred on the mail in clientmqueue it looks like
that mail hangs in clientmqueue until the queue
runner gets around to trying the DNS lookup again.
So, if one is using a modem and composing off line,
it seems one needs a way to make the DNS lookup
happen and move the mail from clientmqueue into
mqueue or else send the mail directly out of
After reading the sendmail man page, I tried
# sendmail -Ac -q -v
which seemed to work (or else the queue runner
woke up by itself about the same time, or else
the mail was sent because of some other reason).
I'll try "sendmail -Ac -q -v" again with this
message. . . .
Thanks again to everyone who has tried to help
me with this problem. It's just wonderful to
receive such generous and courteous assistance.