What ports and methods are used for receiving and sending email?

vweiss
2021-04-22 10:26

If you have a hosting package with us that contains e-mail accounts, the following settings can be used under the respective ports:

Configuration settings for e-mail clients
We recommend establishing the connection with STARTTLS. All current e-mail clients support STARTTLS.

  1. SMTP
    Port: 587
    Encryption method: STARTTLS
    Authentication method: normal password
  2. IMAP
    Port: 143
    Encryption method: STARTTLS
    Authentication method: normal password
  3. POP3
    Port: 110
    Encryption method: STARTTLS
    Authentication method: normal password

Alternative connection option with SSL / TLS

  1. IMAPs
    Port: 993
    Encryption method: SSL / TLS
    Authentication method: normal password
  2. POP3s
    Port: 995
    Encryption method: SSL / TLS
    Authentication method: normal password

E-mail server connection options
The following connection options are only available for the connection between email servers.
Some e-mail clients can also connect to these ports for backward compatibility.
We reserve the right to deactivate this option in the future. For this reason, we recommend establishing the connection with STARTTLS.

  1. SMTP
    Port: 25
    Encryption method: none, STARTTLS
  2. SMTPs
    Port: 25
    Encryption method: SSL

Illustration of the different connection options based on the good old postal service:
There are two types of mailboxes there, the large yellow mailboxes on the street and the small mailboxes in the houses. Ports 25 and 465 correspond to the small mailboxes on the houses; Postmen leave letters there, but no letters are placed there for further dispatch. These belong in the large yellow mailboxes outside - this corresponds to port 587 on servers.

Tags: Hosting, Mailspace
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