Source: amavisd-milter
Version: 1.5.0-5
Severity: normal
Tags: patch
Dear Maintainer,
I configured Postfix to submit incoming messages to Amavis.
In /etc/postfix/main.cf I added this line :
smtpd_milters = unix:amavis/amavis.sock
This assumes the unix socket /var/spool/postfix/amavis/amavis.sock exists and
is usable to user "postfix", as I specified in /etc/default/amavisd-milter :
MILTERSOCKET=/var/spool/postfix/amavis/amavis.sock
MILTERSOCKETOWNER="postfix:postfix"
MILTERSOCKETMODE="0660"
However I got this postfix/smtpd error in /var/log/mail.log :
warning: connect to Milter service unix:amavis/amavis.sock: Permission denied
The owner of socket amavis/amavis.sock is wrong :
srw-rw---- 1 amavis amavis 0 Feb 4 17:51 /var/spool/postfix/amavis/amavis.sock
An error occured in the initscript, chown did not work :
# service amavisd-milter status
(...)
systemd[1]: Starting LSB: Starts the amavisd-milter daemon...
amavisd-milter[7407]: Starting amavisd-milter Daemon:: amavisd-milter.
amavisd-milter[7407]: chown: cannot access
‘/var/spool/postfix/amavis/amavis.sock’: No such file or directory
amavisd-milter[7415]: starting amavisd-milter 1.5.0 on socket
/var/spool/postfix/amavis/amavis.sock
systemd[1]: Started LSB: Starts the amavisd-milter daemon.
This error occurs at line 85 of /etc/init.d/amavisd-milter :
chown "$MILTERSOCKETOWNER" "$MILTERSOCKET"
When this command is executed, the socket does not yet exist on the
filesystem.
Here is a first patch :
--- debian/amavisd-milter.init.orig 2017-02-04 18:16:44.575564619 +0100
+++ debian/amavisd-milter.init 2017-02-04 18:17:04.266431849 +0100
@@ -81,6 +81,7 @@
0)
log_end_msg 0
if [ "$MILTERSOCKETTYPE" = "pipe" ]; then
+ sleep 1
if [ "$MILTERSOCKETOWNER" ]; then
chown "$MILTERSOCKETOWNER" "$MILTERSOCKET"
fi
However one second might not be enough on a too busy and slow server.
A better fix would be to wait for the socket to exist before proceeding and
timeout if it is not created after a few seconds.
