I used qmail for a while many years back. It can certainly handle load and it's not a PITA to configure. If you're looking for group calendaring or other collaboration functions, ModusMail is not for you.Īs of this writing, ModusMail is at version 4.6, so some of the above may not apply if you're reading this after a new version is released. It ships with a webmail application which includes basic contacts, but that's about it. ModusMail handles e-mail via SMTP, POP, and IMAP. The other con is that is is a pure e-mail server, not a collaboration platform like Exchange. For me this isn't much of a problem, but some people would scream bloody murder if they can't see the source code, so that is a potential issue. The second is that is it proprietary software. It is expensive, yes, but worth every penny in the amount of administration time we save by using it. No system is perfect, so there are bound to be some things that people won't like about any solution. For larger enterprises or situations where e-mail absolutely cannot go down, Vircom also offers a cluster solutions where two of them can work in tandem to ensure maximum uptime. We give customers access to manage their own mailboxes, we generate reports for accounting so they can bill accordingly, and hardly ever have to spend time "managing" the solution. The second reason is that it requires very little maintenance. It can integrate with just about anything else that I need, supports secure connections, and has a very, very good anti-spam solution that is constantly being updated by a dedicated team of professionals, etc. One is that it is an extremely feature-rich, mature product. There are two primary reasons that I use it. I have been using ModusMail by Vircom (for Windows) for a number of years with great success. I think other people like it for other reasons. My usual setup is Internet -> Exim -> internal Exchange server with a bit of NAT for active sync and outlook web access. I have never come across a mail requirement that couldn't be handled by exim (and I've had some strange requirements) and the documentation and mailing list support is great. Having said that, I wouldn't make an exchange server directly internet facing as the bulk of mail received by a normal corporate MTA is invalid (spam etc) and the cost per message of running an efficient exchange server is much higher that a solid *nix based MTA.Įxim is (IMHO, and as mentioned) the most flexible, stable and resource efficient way of handling large or small volumes of email - you can have spam/virus filtering with a few additional apps and any rules based flexibility required using the exim filter system. Exchange is a pretty good groupware client, and advantage No.1 is Activesync (email + calendar sync) which frees us from relying on Blackberry :)
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