David Cantrell wrote: > It took me forever to upgrade to exim 4. For someone who doesn't spend a > lot of time looking after mail servers, upgrading your own one is quite > daunting. Mail is the one service that you really don't want to break.
True, but if you follow for example debian's migration docs it is rather painless. Unless you have a lot of tricky custom configuration. I first created an exim4 configuration file with all the custom things from exim3 applied and did test it to see if it was syntactically correct, I also had a safe fallback exim4 setup (a vanilla debian config with the usual exim4-config additions). All went well and downtime was the duration of stopping exim3 and starting exim4. If things would have gone wrong I could have easily kept email working by using the fallback configuration, which would at least guarantee email throughput, but would momentarily break customs stuff like mailinglists (not such a big deal). I'd think migrating from, say, sendmail can be rather painless too. It's a matter of carefully checking the customisations you have and implementing them in your new exim4 config. Do a few test runs on a cloned server. I am personally not such a fan of doing a lot of customisation in the MTA, but rather use a spamfilter to do such things. Since most of it is related to some form of filtering. The few things I have are mailinglists (mailman), smtp authentication, encryption and a few debian related tweaks (using macros). Best regards, Jeroen -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
