[Exim] Exim, Cyrus, and MySql

As promised here is the way I got Exim to delver to Cyrus mailboxes if
the user exists in the MySql database.


# This transport is for Cyrus

local_delivery_cyrus:
driver = pipe
command = "/usr/cyrus/bin/deliver -m ${substr_1:${local_part_suffix}}
-- ${local_part}"
user = cyrus
group = mail
return_output
log_output
prefix =
suffix =


# This director checks if the alias is valid

mysql_system_aliases:
driver = aliasfile
search_type = mysql
query = "select userid from user where aliasid='$local_part'"



# This director matches local Cyrus mailboxes

local_user_cyrus:
driver = aliasfile
search_type = mysql
query = "select userid from user where userid='$local_part'"
transport = local_delivery_cyrus