Secure DreamHost Mail Settings

Even though the settings aren’t listed on, DreamHost supports secure POP3, IMAP, SNMP, and webmail access.

  • Server: – use this, because the mailserver’s certificate is issued for this domain name. This works even though DreamHost says to use mail.<>
  • POP3 using SSL/TLS: Port 993
  • IMAP using SSL/TLS: Port 995
  • SMTP using STARTTLS: Port 587 or 25
  • Webmail: – Make sure you enter “https:”, because DreamHost does not automatically upgrade a http connection to https.
  • Username: <username>@<>

If you want to use STARTTLS for POP3 or IMAP, use the following ports:

  • POP3: Port 110
  • IMAP: Port 143

I recommend using SSL/TLS when possible. Since a STARTTLS session begins as plaintext, because it just adds one (admittedly minor) point of attack. You have to perform a SSL/TLS handshake anyway, why expose yourself to the risk of a STARTTLS upgrade failure too?