Multiply Qmail instances dedicated to thier own IP Address

[JohnMeek]

I am new to qmail, more familiar with the basics of sendmail but I have never had to answer this question before. I have a group that is interested in providing better control of thier email marketing by constraining each of their customers to one IP address for outbound queues. The idea is for a qmail server behind a firewall on a 10 based network have as many IP addresses as customers with each using their own outbound queue dedicated to a specific IP. In effect this provides partial coverage if one client gets RBL-ed the others are sending without penalty. I'm assuming the solution is either some form of virtualization of a kernel (resource expensive) or launching multiple copies of qmail-send, qmail-queue, and qmail-smtp dedicated to the IP address (less overhead than virtualization).

I have deployed qmail-toaster with success but still need to get to this final design. My question is can I accomplish this goal based on the capabilities of the technology? Where are my gotchas in this design ?

Thanks in advance, and please don't laugh too hard when responding ...

 

[thedaver]

Uh, before we start hacking qmail, you might want to explain something...

If these people are using 10./8 private network IPs to reach the mail servers/farm for outgoing email, how the heck is that supposed to insulate risk from being RBLd as a spammer. Presumably your qmail servers have a public IP(s) assigned to them.

If I read your missive correctly, you are going to end up with a handful of servers with a corresponding handful of public IPs serving a large group of mail users with a larger group of "internal" email users sending outbound mail as relays through a large number of internal 10./8 IPs?

You could/should also be using authentication anyways for the smtp sessions, so I really don't understand what you're attempting at all.


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