I am working in a non-profit organization that needs to do the following in terms of our e-mail hosting.

We have 4 domains.

first.com
second.com
third.com
different.com

Currently, when a message is sent to user@first.com, user@second.com or user@third.com the e-mail goes to the same message store to be saved for pickup.

Some folks have an alias setup that allows them to receive mail at differentname@different.com that gets directed to the message store for user@...

I hope I am making sense.

I am beginning to look at qmail along with vpopmail as a potential solution that would help us do what we are currently doing but allow us to do so at a much cheaper price.

Is what I am describing possible with this combination? I believe I can have our hosting company redirect all e-mails for our 4 domains to this server so that shouldnt' be an issue. It is more of how with qmail handle this?

If more information is needed. Please ask. I have just begun looking into this and I want to get a feel for feasibility before I jump into any test system to try things out.

Thanks!

Currently, when a message is sent to user@first.com, user@second.com or user@third.com the e-mail goes to the same message store to be saved for pickup.
Yes, this is easy to do with vpopmail; use vaddaliasdomain

Some folks have an alias setup that allows them to receive mail at differentname@different.com that gets directed to the message store for user@...
This is easy to do with regular qmail; it's probably easy to do with vpopmail as well. I'll have more information once I've tried it for myself (which I'll try and do over the next couple of days).