Best-practice for setting up multiple postmasters

[numri]

Dear OTRS Community,
*edit* Running OTRS 3.2.1 in a linux environment
We have been testing OTRS configurations back and forth for a while now, and we thought we had it all figured out.

However there seems to have been a flaw in our configuration plan.

We have multiple queues and multiple inboxes.

E.g.
Queue - Customer Service -> cs@company.com

Queue - Product Specialists -> No inbox, just to group up the product specialists inboxes
Sub-queue - Technical Support -> support@company.com
Sub-queue - Prio -> prio@company.com

Queue - Logistics -> order@company.com

This configuration looked good on paper. We have had the Prio subqueue configured for a couple of weeks because it doesn't have a lot of traffic, and now when we try to add the technical support inbox, we quickly come to a halt.

In the Core:Sendmail module we set the support mail as outgoing, it's no problem if the support account is used for outgoing mail, if we configure Sender e-mail addresses for the different queues the mail will "seem" to be sent from another mailaddress even though the support account is used, right?

We set up multiple postmasters with POP3S "Dispatch by selected queue" letting them use their respective queues.

And with this setup we can't get OTRS to fetch e-mails, the browser just tries to fetch file index.pl (which we had problems with when SMTP was misconfigured)

What is the best-practice when setting up multiple queues and multiple inboxes? I know it's a big question, and it's been discussed before but I couldn't make heads of how we should actually set it up.
Should you just set up 1 inbox, copy all mail too it in the exchange, and let OTRS dispatch it to queues with a postmaster filter reading the headers of the mail?


Thank you in advance!

Best regards,
Fredrik