Standard Email Messaging Ports

Note The following info applies to advanced email settings:

  • These port settings should be provided by your email provider or corporate admin:
    • POP3: 110
    • IMAP: 143
    • SMTP: 25
    • Secure SMTP (SSMTP): 465
    • Secure IMAP (IMAP4-SSL): 585
    • IMAP4 over SSL (IMAPS): 993
    • Secure POP3 (SSL-POP): 99
  • To use a non-standard port, add a colon (:) followed by the port number to the end of the server name.
    • For example, if your incoming mail server (pop.mailserver.net) communicates via port 115, the server would be configured as pop.mailserver.net:115.
  • ISP/SMTP providers:
    • may require Authenticated SMTP (ASMTP).
      Note ASMTP uses some form of authentication (username/password, IP address, etc.) to verify that a sender is authorized to send messages using that particular server.
    • If the provider uses an IP address or IP range for authentication, you must establish a dial-up connection to the ISP/SMTP provider. This ensures you are assigned a valid IP address for authentication. Otherwise, attempts to send fail.
  • If the provider uses a username/password combination to authenticate senders:
    • The combination must be valid for both the incoming and outgoing servers.
    • Some email clients do not support ASMTP that is independent of the incoming username/password. In these cases, you may not be able to retrieve email from one provider and send using another.
  • To obtain individual server settings, refer to Common Email Server Addresses.
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