Re: [vchkpw] strange qmail/vpopmail problem
On Tue, 2005-02-15 at 10:41 -0600, Jeremy Kitchen wrote: to be more precise, sending qmail-send a HUP signal tells it to reload virtualdomains and locals. There are some patches floating around to make it reload more.. but the important thing was it reloaded the locals/virtualdomains files OK, that makes sense. What I'm curious about is...does qmail-send not need that to re-read the rcpthosts file ? If *everything* had stopped working, that'd make sense, and I would have spotted it a lot earlier. As it was, only some stuff stopped working. john
Re: [vchkpw] strange qmail/vpopmail problem
On Mon, 2005-02-14 at 11:21 -0600, Jeremy Kitchen wrote: That's very odd. Are the domains in control/smtproutes (causing them to be forwarded)? Even if they are, I'm pretty sure that virtualdomains overrides smtproutes (at least that's what I'm seeing as I move domains to a new server). qmail-send probably just needs a HUP signal. That fixed the problem. Your prescience unnerves me...how did this fix the problem ? john
[vchkpw] strange qmail/vpopmail problem
I have a large mail server with about 18000 domains. There are also some servers that NFS mount /var/vpopmail/domains /var/qmail/control /var/qmail/users from the backend mail server. For some months, its been working fine - all incoming SMTP/POP requests go to the front end boxes, and it all works fine. However of late two of the 18000 domains have been acting up. For some reason, the front end servers are relaying - not accepting - mail for two domains. The only strange thing about their setup is that there is an anti-virus system which has a lower number MX record, so gets the mail and forwards it these mail servers. For 200 other cases, after its virus scanned, the mail servers accept the mail. In these two, it relays it back to the AV server, causing a loop. Both domain names are mentioned in: /var/qmail/control/rcpthosts /var/qmail/users/assign /var/qmail/control/virtualdomains But its still not storing the mail locally. Has anyone else ever seen this ? I don't even know where to start looking for a cause. Is there an easy way of running strace over some qmail daemon to see how it works out what to do with mail on a vpopmail system ? An unrelated question - is there any reason why /var/qmail/control/virtualdomains isn't a CDB file ? John
[vchkpw] debugging vchkpw?
I have a vpopmail server that's been running fine for over a year. Now, it's refusing to authenticate people; [EMAIL PROTECTED] tmp]# telnet localhost 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK 16266.1061371053@/hsphere/local/var/vpopmail/bin/vchkpw user [EMAIL PROTECTED] +OK pass secret -ERR this user has no $HOME/Maildir Connection closed by foreign host. [EMAIL PROTECTED] tmp]# grep john /var/vpopmail/domains/hosting365.ie/vpasswd john:fqwqZasdMrhcs:1:0:john:/hsphere/local/var/vpopmail/domains/hosting365.ie/john:300m [EMAIL PROTECTED] tmp]# ls -l /hsphere/local/var/vpopmail/domains/hosting365.ie/john/ total 8 -rw-r--r--1 vpopmail vchkpw 4 Aug 20 09:59 lastauth drwx-- 14 vpopmail vchkpw 4096 Aug 20 10:16 Maildir Any ideas why this could happen ? Is there docs on running vchkpw so I could see how it works ? Yes, the code does have bits pieces like; printf(vchkpw: what the hell are you doing running vchkpw on the command line!! It's only for talking with qmail-popup and qmail-pop3d.\n); But I'm out of ideas as to what could have gone wrong. Curiously, courier-imap, is authenticating the same users fine. John
Re: [vchkpw] debugging vchkpw?
On Wed, 2003-08-20 at 10:37, Peter Palmreuther wrote:
Is there docs on running vchkpw so I could see how it works ? Yes, the
code does have bits pieces like;
printf(vchkpw: what the hell are you doing running vchkpw on the
command line!! It's only for talking with qmail-popup and
qmail-pop3d.\n);
printf [EMAIL PROTECTED] | \
strace -f -s 4096 -o /tmp/vchkpw.log ~vpopmail/bin/vchkpw /bin/true 30
and search for a chdir system call in '/tmp/vchkpw.log'.
If you're not on Linux but e.g. *BSD use 'truss' or anything else that
enables you to trace system calls.
Thanks for a speedy reply!
OK, as expected, that looks like it's working fine;
6485 chdir(/hsphere/local/var/vpopmail/domains/hosting365.ie) = 0
6485 getcwd(/var/vpopmail/domains/hosting365.ie, 156) = 36
6485 getpid() = 6485
6485 brk(0x8057000)= 0x8057000
6485 open(/hsphere/local/var/vpopmail/domains/hosting365.ie/vpasswd.cdb, O_RDONLY)
= 4
down the end, it has;
6485 munmap(0x40015000, 4096) = 0
6485 getpid() = 6485
6485 rt_sigaction(SIGPIPE, {0x420e46e0, [], 0x400}, {SIG_DFL}, 8) = 0
6485 socket(PF_UNIX, SOCK_DGRAM, 0)= 4
6485 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0
6485 connect(4, {sin_family=AF_UNIX, path=/dev/log}, 16) = 0
6485 send(4, 21Aug 20 10:42:22 vpopmail[6485]: vchkpw: password fail [EMAIL
PROTECTED]:, 77, 0) = 77
6485 rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0
6485 _exit(3) = ?
Which, as I mentioned is strange, as courier imap authenticates off the same vpasswd
file...
John
Re: [vchkpw] debugging vchkpw?
No, I'm a fool. I had a typo in the password I'd fed to vchkpw on the
command line. I re-did it with the write password (again, the chdir
works) but toward the end is;
25765 munmap(0x40015000, 4096) = 0
25765 time(NULL)= 1061373355
25765 open(/hsphere/local/var/vpopmail/etc/open-smtp.lock,
O_RDWR|O_CREAT|O_TRUNC, 0666) = 4
25765 fcntl64(4, F_SETLK, {type=F_WRLCK, whence=SEEK_SET, start=0,
len=0}) = 0
25765 open(/hsphere/local/var/vpopmail/etc/open-smtp, O_RDWR) = 5
25765 getpid() = 25765
25765 open(/hsphere/local/var/vpopmail/etc/open-smtp.tmp.25765,
O_RDWR|O_CREAT|O_TRUNC, 0666) = 6
25765 fcntl64(4, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0,
len=0}) = 0
25765 close(4) = 0
25765 getuid32()= 0
So, it looks like that's working logging in fine, even updating the
pop before smtp database.
Ominously, there is a file fix.sh in the vpopmail server I've never
considered before, which may be a remnant of a previous sysadmin. Is
this a standard tool ?
John
Re: [vchkpw] debugging vchkpw?
On Wed, 2003-08-20 at 10:57, John P. Looney wrote: So, it looks like that's working logging in fine, even updating the pop before smtp database. I should have pointed out, that although running vchkpw from the command line works fine, it still gives; -ERR this user has no $HOME/Maildir when I login. Is there a next step in debugging vpopmail you could recommend ? John
