Ian Jackson writes:
> Philip: if you want to get exim ahead in the world it would be great
> if you could look at qmail's virtual domain and
> user-controlled-email-addresses features: email processing experts
> will find them very useful. (I'd suggest that having a single dotfile
> for all the addresses owned by a user would be a better way to go.)
I installed qmail here to take a look at and my impressions of it were
were close to Ian's. I'd like to second his recommendation on the above
however. A built in mechanism for virtual domaining would definately
help both exim's acceptance and the ease of using it. I personally like
exim because it's similarity to smail and it's advancements over smail,
but I could never get it installed on our servers at work without some
mechanism for virtual domains. I'd like to see something more flexible
than qmail's dotfile in the home directory though. I would think it
would fit better with the rest of exim's design if you could specify
where to look for the files and what the filenames were in the driver
section. One system that comes to mind would be using the filesystem as
a database, ie, an ISP could create a directory tree somewhere such as
start_dir/com/domain1 start_dir/com/domain2 start_dir/org/domain.3. Then
exim could use the target domain to search this directory tree for the
appropriate map file. We currently do something similar with a perl
program using smail, but having the lookup built into the mailer would
save spawning another copy for deliverys. As well, it would be nice if
the lookup mechanism could be defined, so for instance you could
substitute a queryprogram driver and interface the lookup with a
database, as we forsee that as the next logical step for larger virtual
domain handling. This also allows you to give the user access to the
forwarding and editing of the domain files using a WWW interface into
the database.
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