Re: [Dovecot] Loginname - mapping

[Timo Sirainen]

On Dec 1, 2008, at 10:49 PM, Roald Amundsen wrote:

Timo Sirainen wrote:

On Sat, 2008-11-29 at 21:49 +0100, Roald Amundsen wrote:

Is there any facility to let dovecot do username mapping?

If I eg have a file: usermapping that looks like this:

[EMAIL PROTECTED]       domain1_user
[EMAIL PROTECTED]       user_domain2
[EMAIL PROTECTED]       domain3.user

Yes, but can you change your passdb? You can use any passdb that allows

specifying [EMAIL PROTECTED] extra field

(http://wiki.dovecot.org/PasswordDatabase/ExtraFields). For example with

passwd-file (http://wiki.dovecot.org/AuthDatabase/PasswdFile):
domain1_user:{plain}pass:1000:1000::/home/domain1.com/user::[EMAIL PROTECTED]

Thanks, this seems to be what I am looking for. However, I am not sure if I am reading the links right. I am supposed to make a custom passwd-file, and point dovecot to this? I can use a script to parse genericstable or even virtusertable and add this information at the end of the dovecot-passwd-file?

I guess. Just make sure that the file is updated using mv (rename()) command so that it gets updated atomically (so Dovecot never reads partially written files).

And I can still use /etc/passwd as a fallback in case something goes wrong? As long as I keep userdb passwd in dovecot.conf?

You could set that up with:

passdb passwd-file {
  args = /etc/dovecot.passwd
}
passdb passwd {
}



domain1_user:{plain}pass::::::[EMAIL PROTECTED]

Also if you keep using userdb passwd, you don't need to have the uid/ gid/home in the passwd-file at all, so the files would then look like:

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