I've typically ran on boxes w/ Exim. We are evaluating different MTAs, I've been using a stock postfix install and am pretty happy. I have two main areas that we need to "tweak". We have a mailing list and run into all the problems that are natorious with spammers, even though we definitely aren't spamming (you can see the site, it's on adoptions, centered around Haiti and my personal adoption - we help a lot of people do their adoptions - www.MyHaitianAdoption.org). Since the earthquake in Haiti my site has gone through the roof (search Haiti/Haitian adoption and you'll see my site on the front page if not the #1 spot).
We're trying to deliver email "smart" as to not become blacklisted even though we are a double-opt-in list. 1. We want the ability to schedule delivery to a lot of common domains so our email server isn't trying to email the world all at once, we'd rather set certain hours of delivery for different domains. We *can* manage this by handing the emails to the MTA at the times when we want that domain delivered, but then the issue becomes if the recipient domain says "defer" postfix only defer's *that* email and continues to irritate the recipient domain with all the other emails to that domain. I'd prefer the MTA be smart enough to handle the defer and delivery times. (maybe I should list this defer problem as a separate item). 2. We need to ensure connection caching is really happening - I thought I had this configured correctly, but in my own testing it doesn't look like it's really working. I posted this in a previous email a couple days ago and haven't seen any responses to it. Maybe my test is "wrong". I create 50 emails within a few seconds all to me and used a sniffer to watch the emails coming in and counted up the connections. Any help would be greatly appreciated. Thanks and God Bless, Richard W. Pickett, Jr. www.MyHaitianAdoption.org P.S. Have you downloaded the journal from my trip to Haiti: http://www.myhaitianadoption.org/trips/journal-earthquake-rescue-jan-23-feb-2/
