[Exim] Exim & MySQL

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Autor: Matthias Pronk
Datum:  
To: exim-users
CC: matthias.pronk
Betreff: [Exim] Exim & MySQL
Hi exim users,

I'm trying to configure Exim 4.14 with MySQL, but have some problems
with the lookups. I would like to do virtual domains (mail arrives for
multiple domains, and john@??? != john@???).
But i find that sometimes mail (which should be forwarded to an other
e-mail address) is returned with the following error:

     Delay reason: Failed to find group "" from expanded string
"${lookup mysql{
SELECT gid FROM users WHERE address='${local_part}@${domain}' }}" for
the
mysql_delivery transport


The router in my Exim configuration file which should handle this is:

---
MYSQL_QUERY_ALIASES = SELECT dest FROM aliases WHERE
user='${local_part}' AND domain='${domain}'

mysql_aliases:
driver = redirect
allow_fail
allow_defer
data = ${lookup mysql { MYSQL_QUERY_ALIASES }}
---

But for some reason it is handled by this router (which comes later in
the config file):

---
mysql_user:
driver = accept
retry_use_local_part transport=mysql_delivery
---

and this transport:

---
MYSQL_QUERY_DIRECTORY = SELECT CONCAT(home, maildir) FROM users WHERE
address='${local_part}@${domain}'
MYSQL_QUERY_UID = SELECT uid FROM users WHERE
address='${local_part}@${domain}'
MYSQL_QUERY_GID = SELECT gid FROM users WHERE
address='${local_part}@${domain}'

mysql_delivery:
driver = appendfile
maildir_format
directory = ${lookup mysql{ MYSQL_QUERY_DIRECTORY }}
delivery_date_add
user = ${lookup mysql{ MYSQL_QUERY_UID }}
group = ${lookup mysql{ MYSQL_QUERY_GID }}
---

Can anybody of you help me out? I couldn't find a nice tutorial on Exim
4 (all of them are written for Exim 3).

If you want to, I can send you my configure, a dump of my database
tables, etc.

Many thanks for your attention!

- Matthias Pronk