![]() Important parts of the server SMTP response are so-called Basic status codes and Enhanced status codes.īasic status codes contain 3 digits, where the first digit represents whether the response is: While proceeding with this method, it’s important to properly recognize the responses of an email server. ![]() Learn more atĢ21 2.0.0 closing connection l26si4867318ljg.18 - gsmtp Please tryĥ50-5.1.1 double-checking the recipient's email address for typos orĥ50-5.1.1 unnecessary spaces. Here is how the communication would look like for a deliverable email address:ĥ50-5.1.1 The email account that you tried to reach does not exist.
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