No stress and hardly any work once you get the configuration right - which usually comes down to configuring a smart server for outgoing mail, one or more domai

No stress and hardly any work once you get the configuration right - which usually comes down to configuring a smart server for outgoing mail, one or more domains for incoming mail and some form of spam filtering - Spamassassin being a good candidate. Make sure your user's passwords are up to snuff and the software is up to date (which can largely be automated) and the total maintenance time is usually quite a bit less than 8 hours per year. * Exim or Postfix as MTA * Dovecot as MDA, add managesieve and you'll be able to sort/filter/file mail based on just about any combination of criteria * Spamassassin to keep out all those offers you can't refuse * Roundcube or Rainloop for web mail, looking at the same IMAP account as you use on your other devices I've never had any of my servers 'hacked' in those 26+ years.