Re: Possible sendmail misconfiguration to deliver to cyrus
On Monday 04 December 2006 10:31 am, Todd Lyons wrote: As I see it, a more sendmailish solution would be to use a little sendmail-fu and make it so that sendmail checks for local user at smtp time, but delivers to cyrus at deliver time. I don't have such fu, but I see now as a good enough time to start studying up on it as well as exploring the above option. I also had that problem since most of the spam I was getting to my domain was to nonexistent users. I discovered sendmail has a local mailer flag that indicates whether sendmail should check the recipient against local users at smtp time. The flag is 'w'. My sendmail.mc has the following line: define(`CYRUSV2_MAILER_FLAGS', `A@/:|mw')dnl where cyrusv2.m4 has the line: _DEFIFNOT(`CYRUSV2_MAILER_FLAGS', `A@/:|m') This solved my problem but it requires that I have a local machine account for each cyrus user. As a small domain that's not a problem for me, but others might find it too restrictive. Dave McCracken Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: 5.1.1 User unknown bounces
On Saturday 09 September 2006 9:19 am, Kjetil Torgrim Homme wrote: On Fri, 2006-09-08 at 10:45 -0700, Andrew Morgan wrote: Otherwise, just let Sendmail queue the message and attempt to deliver the message to Cyrus. If the user does not exist, Cyrus will let Sendmail know during the LMTP handshake. DO NOT DO THIS! if your Sendmail accepts _all_ possible local parts during the SMTP transaction, you will be sending out lots of bogus bounces to addresses abused (joe-jobbed) as senders of spam. I second this emphatically. I discovered I was sending out thousands of bounce messages per day with this setup. My solution was to go into my sendmail.mc and define CYRUSV2_MAILER_FLAGS to be A@/:|mw. The default does not have the w flag. This flag tells sendmail to validate the user id on the local machine when it queues the mail for this mailer. Since I have a small set of valid users it was easy for me to define them all in /etc/passwd. I'd guess a larger site would want to set up something more complex. The key point is that sendmail still has the connection to the sender open when it selects the mailer. If it detects an error there it responds with an error status to the sending mailer. If no error is detected, sendmail will close the connection before actually invoking the mailer. At this point its only recourse is to send bounce mail. Dave McCracken Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: sieveshell
--On Tuesday, March 15, 2005 17:48:32 -0700 Craig White [EMAIL PROTECTED] wrote: I want to insert sieve scripts for users via sieveshell but I can't seem to get that done... sieveshell -u Alec localhost will try to authenticate as root, not as Alec and I can't su to Alec since he doesn't have a usable shell. Is there any other way? Use -a unstead of -u. The correct syntax would be: sieveshell -a Alex localhost Dave McCracken --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: [STATUS] NNTP support (10/17/02)
--On Friday, October 18, 2002 10:05:10 -0400 Ken Murchison [EMAIL PROTECTED] wrote: Right now, I'm using 'ipurge', but I have an 'expirenews' tool to purge entries from netnews.db which I plan on adding the article delete code to. Have you gotten ipurge to be reliable? I gave up on it because it kept deleting mail that didn't match its criteria, ie I specified greater than 14 days and it often deleted mail that was less than a day old. And yes, I did report this behavior on the list a couple of times, but no one ever responded. Dave McCracken == Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 [EMAIL PROTECTED]T/L 678-3059
Re: [STATUS] NNTP support (10/17/02)
--On Friday, October 18, 2002 12:58:41 -0400 Ken Murchison [EMAIL PROTECTED] wrote: Do you remember which version of Cyrus? I fixed a signed/unsigned problem with ipurge back in 2.1.6 which was causing behavior similar to what you describe. I saw it on 2.0.16. I'll try it again when I upgrade. Dave McCracken == Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 [EMAIL PROTECTED]T/L 678-3059
Re: RECENT/SEEN flags
--On Wednesday, February 27, 2002 11:14:36 -0500 Cyrus Daboo [EMAIL PROTECTED] wrote: Yes, one connection is used to do periodic STATUS polls of all mailboxes you have marked for new mail checking. Then a new connection is used when you actually open a mailbox. When a mailbox is open, the checking is done via that connection using NOOPs. Based on the brief description that Larry had provided I'm guessing the caching happens on for the connection where the mailbox is SELECT'ed - i.e. the one where the mailbox is opened by the user - and not the STATUS connection. The code is the definitive source for this... I get the same behavior. It's not just on the last folder I opened. I will typically go through half a dozen folders that have unread mail, and all of them will then have their unseen counts reappear after they're closed. Opening each of them a second time will clear it. Dave McCracken == Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 [EMAIL PROTECTED]T/L 678-3059
RE: RFC: Sieving mail delivered directly to shared/public folders
--On Friday, November 09, 2001 08:10:35 + Ian Castle [EMAIL PROTECTED] wrote: So rather than thinking that this script applies to this user I am suggesting that we think this script applies to this folder. Obviously, if the folder is user.fred then the statements are synonymous. However, we can use the second way to, obviously, refer to more than just folders of the category user.something. I think this is a great idea. I have a question, though. If a sieve script does a 'fileinto' to redirect mail to another folder, does the sieve script for that folder get run? Intuitively I think it should, but what are the implications? Dave McCracken == Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 [EMAIL PROTECTED]T/L 678-3059
Problem with ipurge
In my mail setup I re-route my high volume mailing lists to separate folders, then rely on ipurge to prune them. I upgraded to Cyrus imap 2.0.16 awhile back, and over time noticed that some mail appears to be getting deleted before the 2 week expiration I specified. In fact, I've seen a folder with over 100 unread messages that arrived overnight get reduced to 50 unread messages. I'm guessing this means something in ipurge or the server is getting the timestamp wrong for the messages. Has anyone else seen this? I'm running Debian unstable with kernel 2.4.9, in case this matters. Dave McCracken == Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 [EMAIL PROTECTED]T/L 678-3059
