A private email server provides unlimited configuration, customisation and users, with no additional cost per user and mailbox storage up to the capacity of the disk subsystem.
- DKIM signed email
- DNSBL Blocklists
- RHSBL Blocklists
- URIBL Blocklists
- Whitelist / Blacklist
- Greylisting
- Spam and Virus filtering
- GeoIP
- Multi-domain
- Encrypted (128-bit SSL) IMAP, SMTP, POP3
- TLS transport to remote SMTP hosts
- SSL Webmail with DAV integration of Calendars, Contacts, Tasks
- Sieve Server email filtering.
- Letsencrypt SSL Domain Verification Certificates
