Debugging.Rawlog.txt   [plain text]

Rawlog
======

Dovecot supports logging post-login IMAP/POP3 traffic (also TLS/SSL encrypted)
using 'rawlog' binary. It works by checking if 'dovecot.rawlog/' directory
exists in the logged in user's home directory, and writing the traffic to
'yyyymmdd-HHMMSS-pid.in' and '.out' files. Each connection gets their own
in/out files.

Home directory
--------------

Note that for rawlog to work, your <userdb> [UserDatabase.txt] must have
returned a home directory for the user. If you can't get rawlog to work, you
should verify that the home directory really is where you expected it to be by
setting 'mail_debug=yes' and checking the logs. You should see a line such as:

---%<-------------------------------------------------------------------------
Effective uid=1000, gid=1000, home=/home/user
---%<-------------------------------------------------------------------------

In above configuration rawlog would expect to find '/home/user/dovecot.rawlog/'
directory writable by uid 1000.

If you don't have the home directory and you can't or don't want to modify
userdb configuration, you can add the home to plugin section:

---%<-------------------------------------------------------------------------
plugin {
  # ..
  home = /home/%u
  # or temporarily even e.g. home = /tmp/temp-home
}
---%<-------------------------------------------------------------------------

Configuration
-------------

To enable rawlog, you must use rawlog as a <post-login script>
[PostLoginScripting.txt]:

---%<-------------------------------------------------------------------------
service imap {
  executable = imap postlogin
}
service pop3 {
  executable = pop3 postlogin
}

service postlogin {
  executable = script-login rawlog
  unix_listener postlogin {
  }
}
---%<-------------------------------------------------------------------------

You can also give parameters to rawlog:

 * -i: Log only to *.in files
 * -o: Log only to *.out files
 * -b: Write IP packet boundaries (or whatever read() sees anyway) to the log
   files. The packet is written between<<< and >>>.
 * -t: Log a microsecond resolution timestamp at the beginning of each line.

Warning
-------

The rawlog seems not to work if you set the home directory in a chrooted
enviroment.See <Chrooting.txt>.

(This file was created from the wiki on 2011-11-16 14:09)