I run my own mail server. Have done since Evolution mail was in BETA circa 2003 ish (time flies). Started with a Linux Mandrake based Postfix, Procmail, Dovecot

I run my own mail server. Have done since Evolution mail was in BETA circa 2003 ish (time flies). Started with a Linux Mandrake based Postfix, Procmail, Dovecot, Fetchmail setup with SpamAssassin then moved onto a proper Debian setup with Exim, Courier, Procmail, SpamAssassin and then finally after all that faff I found Zimbra. If you like email Zimbra's great - it's a fully baked mail server which you install on your Linux distro of choice and it goes off and installs all of the above for you. Everything is managed via a GUI and you have a great web interface and standards based IMAP, CalDAV support. If you buy the paid version you can even get ActiveSync and Exchange Web Services for it. Despite all that though, I would give anything to have all those countless hours I put into running my own mail server back. It is a colossal time sink. I can't even stress how much work it is, especially if you have anyone relying on the box for their primary mail account. It's no fun at all. You're gonna be debugging Fetchmail for when you or your user's want POP3 accounts downloading mail locally. Procmail for filtering. SpamAssassin (gawd if ever there was something which consumed my life it's that software and its myriad libs and helpers), not to mention familiarize yourself with DNS MX records, SPF, DKIM etc. etc. All of the above works surprisingly well and is fairly solid - until it isn't. When Google added DKIM/SPF protection and blacklisted servers which didn't was a fun weekend that I'd rather have spent with my family. When customer emails started bouncing because their IPs had hit an over zealous RBL list which Zimbra was using was a fun afternoon of debugging. When Zimbra decides to randomly let in 10-20 spam emails a day into my mailbox is another weekend project which I've yet to get round to. Thank god I'm self employed is all I can say because no employer would tolerate an employee putting the care and feeding required to maintain a personal email server! Unless you want to nurture a career as a mail sysadmin seriously, don't host your own mail server. Bottom line I'd recommend to anyone thinking about hosting one to either: 1. Don't 2. Use Microsoft Exchange Server 3. Use Zimbra 4. Seriously, don't - consider Fastmail, Gmail, O365 or Protonmail instead.