Our email services support auto-discovery and most email clients will automatically configure themselves to the optimal settings available. However our email servers support connections over the following ports...

Protocol Security Type Port Number(s)

SMTP Encrypted (SSL or TLS) 465

SMTP Encrypted (STARTTLS) 587 or 25, 26, 2025, 2525

SMTP Unencrypted 25, 26, 2025, 2525

IMAP Encrypted (SSL or TLS) 993

IMAP Encrypted (STARTTLS) 143

IMAP Unencrypted 143

POP3 Encrypted (SSL or TLS) 995

POP3 Encrypted (STARTTLS) 995

POP3 Unencrypted 110

The recommended settings are in bold.

Most ISPs block port 25, so we recommend using an alternate port if you need to use unencrypted or STARTTLS connections.