On 20/01/17 22:22, Michelle Konzack wrote:
> All the users where created on <storage00> as "normal" UNIX users
> and there login name is also there email address. So, now you can
> imagine, that this give problems if <mail> is responsable for
> different  domains, where maybe two users have the same names...

You could go completely virtual and store j...@domain1.tld and
j...@domain2.tld usernames in PG, MySQL or SQLite, along with
different home/maildir paths, quotas and uid/gids.

> Question: Is there a limitation in the number if files or symlinks
>  in the /etc/courier/aliases/ directory? I think also on using my
> PostgreSQL for all this aliasses and generate only one file
>automated which then run "makealiases" Any suggestions?

System aliases are certainly efficient but if you would consider
running maildrop as the delivery agent then you could "naturally"
split up all user aliasing to each users home dir dictated by the
above SQL query (not the /etc/passwd homedir, but could be the same.)

maildrop also provides per-user mailfilters which allows for per-user
vacation scripts along with a wide range of flexibility to do just
about anything.

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