Re: [vchkpw] Qmail smtp oddity with vpopmail and chkuser
Tom Collins wrote: On Oct 27, 2006, at 7:06 AM, DAve wrote: mail from: [EMAIL PROTECTED] ## At this point qmail-smtpd just sits and never responds 250 ok The only difference is the colon after the mail from command. No colon and qmail-smtpd responds, a colon and it does not, ever. I narrowed it down to stock qmail works, and qmail + chkuser does not. It seems to make no difference which vpopmail I use. This is very odd to me because this configuration has passed millions of messages in the past two years. I see no reason why it should fail to respond to an incoming connection incorrectly now. Just as an FYI, RFC821 says you need angle brackets around the email address (and no space after the colon). Regardless, qmail-smtpd should come back. I just tried your test on my system (Shupp Toaster) and it came back fine. Yea, I normally use the full correct syntax, but I know my server do not require it so I generally type by habit, right or wrong. I did try a correct syntax and the results got even odder. bash-2.05b# telnet 10.0.241.135 25 Trying 10.0.241.135... Connected to ecluster5. Escape character is '^]'. 220 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! ESMTP helo avhost1 250 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! mail from:[EMAIL PROTECTED] ^] telnet quit Connection closed. bash-2.05b# telnet 10.0.241.135 25 Trying 10.0.241.135... Connected to ecluster5. Escape character is '^]'. 220 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! ESMTP helo avhost1 250 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! mail from[EMAIL PROTECTED] ^] telnet quit Connection closed. bash-2.05b# telnet 10.0.241.135 25 Trying 10.0.241.135... Connected to ecluster5. Escape character is '^]'. 220 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! ESMTP helo avhost1 250 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! mail from [EMAIL PROTECTED] ^] telnet quit Connection closed. bash-2.05b# telnet 10.0.241.135 25 Trying 10.0.241.135... Connected to ecluster5. Escape character is '^]'. 220 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! ESMTP helo avhost1 250 smtp.tls.net UNAUTHORIZED USE WILL BE PROSECUTED! mail from [EMAIL PROTECTED] 250 ok ^] telnet quit Now only mail from [EMAIL PROTECTED] works. Noting else does. I am completely perplexed. I have made one more change, I scp'd over my sources for vpopmail from a working server and recompiled and reinstalled onto the failing server and the problem persisted. I will try doing the same with qmail and chckuser next. Need to get some things done first. It is looking like the only difference will be FreeBSD versions. DAve -- Three years now I've asked Google why they don't have a logo change for Memorial Day. Why do they choose to do logos for other non-international holidays, but nothing for Veterans? Maybe they forgot who made that choice possible.
[vchkpw] Missing loop check in vdelivermail
I was quite surprised to learn that vdelivermail from vpopmail 5.4.13
and 5.4.17 (and probably most earlier releases) does not detect all
mail loops.
The checks are all performed when parsing .qmail files and the like.
In my particular situation, an Exchange server was picking up mail
from my server (via POP), and deciding to re-distribute it to
everyone in the To field (including the mailbox it picked mail
from). I ended up seeing messages in this mailbox with the same
Delivered-To line repeated dozens of times.
I've added a simple fix, which is to check the address right at the
start of main(). I've tested it, and it works. I'd really like to
rework the way Delivered-To headers are checked and added*, but don't
have the time to get into it now. For now, here's the patch if
anyone wants to try it out.
--- vdelivermail-orig.c 2006-06-29 12:36:43.0 -0700
+++ vdelivermail.c 2006-10-28 08:17:42.0 -0700
@@ -111,8 +111,14 @@
*/
int main(int argc, char **argv)
{
+char loopcheck[255];
+
/* get the arguments to the program and setup things */
get_arguments(argc, argv);
+snprintf (loopcheck, sizeof(loopcheck), [EMAIL PROTECTED], TheUser,
TheDomain);
+if ( is_looping( loopcheck ) == 1 ) {
+vexiterr (EXIT_BOUNCE, mail is looping);
+}
#ifdef VALIAS
/* process valiases if configured */
--
Tom Collins - [EMAIL PROTECTED]
Vpopmail - virtual domains for qmail: http://vpopmail.sf.net/
QmailAdmin - web interface for Vpopmail: http://qmailadmin.sf.net/
* I think vdelivermail should insert 1, maybe 2 Delivered-To headers
on each email. The first should be the raw email address from qmail-
local. The second should be the catchall address (or non-ext
address) of the mailbox that ultimately receives the email. The
ultimate delivery address would appear in the headers before the
envelope address.
RE: [vchkpw] POP3 authentication - erratic vmysql auth problem - self solved
On a new linux mailserver I was having an erratic problem with mysql and pop3 authentication. Authentication works 90+% of the time. However, using The Bat! and Outlook clients, I randomly see the following authentication failure and the user must poll pop3 again - which then succeeds. SOLUTION: In spite of what the qmailctl stat told me, I found that increasing the pop3 'run' file memory limit from 800 to 1200 appears to suppress this issue. Any thoughts on why would be welcome. Otherwise, one for the archives... Thanks! Dave. aside from 'the bat!' being a spamware client filtered by most mail daemons and spam solutions... on inbound mailservers... your clients are probably sending/reciving bigger spam attachments than normal to longer lists... u might also want to look at the number of cc's and bcc's those clients are sending... and if its inbound pop have you looked at the size of the pop mailboxes that they are attempting to check? a good hit with 3 or 4 heavy emails will blow 8m pretty easy... remmember the mem limit is the size of the pop binaries \PLUS the mailbox size kenneth gf brown ceo shadowplay.net
