What is an SMTP server? |
What is an SMTP server?
SMTP is the abbreviation for "Simple Mail Transfer Protocol", a protocol widely-used to send emails.
SMTP sends emails to any valid email address. The SMTP server executes two important tasks: First of all, it verifies (authenticates) the identity of the user that wants to access the SMTP account by means of user name and password. Secondly, the SMTP service makes it possible to send emails after the verification is completed. If the email cannot be delivered, it is sent back to the sender with an error message.
For example, if the destination address is wrong, the email is returned to you by the SMTP server with the message "address unknown" or "user unknown". Various other problems can also occur, you will however always find the reason in the returned email.
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