On 3/5/2015 1:27 PM, Nicolás wrote: > Hi, > > Up until now I've been using Postfix for one domain, evidently with > just one configuration, using the virtual domains approach. Now I'm > in a situation where I need to handle another completely different > domain, with a different behavior and a different Postfix > configuration, on the same server. My question is: Should I use the > Multi Instance approach > (http://www.postfix.org/MULTI_INSTANCE_README.html) in this case? > > I'm asking because I'd need to use the same server public IP for > both instances, and I don't know whether Postfix would create two > different processes (one per each instance), which would mean I need > at least a different port (and I even found several examples where > each configuration has its own IP address), or if both > configurations are handled by the same process. > > If the Multi Instance approach is not suitable for this scenario, > would someone recommend another way to face it? > > Thanks, > > Nicolás
If you only have one public IP, you are limited to one postfix instance. Postfix can natively handle multiple virtual domains, each with its own recipient list. The details of "different behavior" determine if this is even doable. Some postfix settings are configurable per recipient domain, others are not. Hosting another domain may be as easy as adding another domain to virtual_mailbox_domains and adding the recipients to virtual_mailbox_maps. -- Noel Jones
