SASL authentication failure

I set up an Ubuntu Jaunty Jackalope (Ubuntu 9.04) vps server with ISPconfig 2 following this tutorial http://www.howtoforge.com/perfect-server-ubuntu-9.04-ispconfig-2

All seems to work quite allright but now I run into a problem regarding postfix and smtp.

When I try to send an email I get:

mail.log

Code:

postfix/smtpd[6517]: warning: SASL authentication failure: cannot connect to saslauthd server: No such file or directory
postfix/smtpd[6517]: warning: host250-228-dynamic.17-87-r.retail.telecomitalia.it[87.17.228.250]: SASL LOGIN authentication failed: generic failure
postfix/smtpd[6517]: disconnect from host250-228-dynamic.17-87-r.retail.telecomitalia.it[87.17.228.250]

Could anyone help me?

 

Please try this:

Code:

adduser postfix sasl
/etc/init.d/postfix restart
/etc/init.d/saslauthd start

 

First of all, thank you Falko.
I have done how you suggested me but it seems not work again.

Any other suggests?

 

What's the output of

Code:

ps aux | grep saslauthd

?

 

Code:

root@vps314345:~# ps aux | grep saslauthd
root      5348  0.0  0.1   8416   872 ?        Ss   Jan07   0:00 /usr/sbin/saslauthd -a pam -c -m /var/spool/postfix/var/run/saslauthd -r -n 5
root      5351  0.0  0.0   8416   508 ?        S    Jan07   0:00 /usr/sbin/saslauthd -a pam -c -m /var/spool/postfix/var/run/saslauthd -r -n 5
root      5352  0.0  0.0   8416   424 ?        S    Jan07   0:00 /usr/sbin/saslauthd -a pam -c -m /var/spool/postfix/var/run/saslauthd -r -n 5
root      5353  0.0  0.0   8416   424 ?        S    Jan07   0:00 /usr/sbin/saslauthd -a pam -c -m /var/spool/postfix/var/run/saslauthd -r -n 5
root      5356  0.0  0.0   8416   424 ?        S    Jan07   0:00 /usr/sbin/saslauthd -a pam -c -m /var/spool/postfix/var/run/saslauthd -r -n 5
root     10077  0.0  0.1   3336   780 pts/1    R+   11:23   0:00 grep saslauthd

 

What's in /etc/postfix/sasl/smtpd.conf and /etc/default/saslauthd?

 

/etc/postfix/sasl/smtpd.conf

Code:

pwcheck_method: saslauthd
mech_list: plain login

/etc/default/saslauthd

Code:

START=yes

DESC="SASL Authentication Daemon"

NAME="saslauthd"

MECHANISMS="pam"

MECH_OPTIONS=""
THREADS=5

OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"

 

What's the output of

Code:

ls -la /var/spool/postfix/var/run/saslauthd/

?

What virtualization technique do you use (OpenVZ/Virtuozzo, Xen, KVM, VMware, etc.)?

 

Code:

root@vps314345:~# ls -la /var/spool/postfix/var/run/saslauthd/
totale 940
drwx--x--- 2 root sasl   4096 2010-01-07 15:02 .
drwxr-xr-x 3 root root   4096 2009-11-02 19:47 ..
-rw------- 1 root root      0 2010-01-07 15:02 cache.flock
-rw------- 1 root root 945152 2010-01-07 15:02 cache.mmap
srwxrwxrwx 1 root root      0 2010-01-07 15:02 mux
-rw------- 1 root root      0 2010-01-07 15:02 mux.accept
-rw------- 1 root root      5 2010-01-07 15:02 saslauthd.pid

We use Xen

 

Looks ok. Are you absolutely sure that the postfix user is a member of the sasl group? What's the output of

Code:

grep sasl /etc/group

?

 

Code:

root@vps314345:~# grep sasl /etc/group
sasl:x:45:postfix

 

Hm, looks ok. I have no idea what the problem is...