Gmail past month has disabled the classic authentication method called "non secure access". Before basically it was enough to configure SMTP smtp.gmail.com
and access credential in main.cf
. Now how could I configure postifix to use gmail as relay?
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AndreaF
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The people that downwoted could explain what is the problem with the question? – AndreaF Jun 25 '22 at 20:14
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Your question shows zero research effort. Also, the same question has been asked and answered multiple times here since Google activated this behavior. – Gerald Schneider Jun 26 '22 at 06:17
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@GeraldSchneider I have searched here and I haven't found any similar question, If I have missed it rather than downvoting it was enough to comment and provide a link In addition if a question is duplicated the correct procedure is to mark it to close as duplicate referencing the analogous question rather than downvoting without even provide an explaination. – AndreaF Jun 26 '22 at 14:57
1 Answers
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Follow the instructions in the URL in the error message returned when you try and sign into the Gmail SMTP server and create a App Specific password.
https://support.google.com/accounts/answer/185833?hl=en
EDIT: The SMTP server will be responding with an error similar to:
535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8 https://support.google.com/mail/?p=BadCredentials g5-20020a50d5c5000000b004356c0d7436sm11008465edj.42 - gsmtp

hardillb
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I haven't such instruction link you talk about, just a message that repots the authorization has been refused. Could you add it? – AndreaF Jun 25 '22 at 17:29
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Trust me, in the logs somewhere will be a the response from the SMTP server when it fails to authenticate with your normal password. But anyway, the answer is a App Specific Password. – hardillb Jun 25 '22 at 17:43
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1Do you have **2-Step Verification** turned on on your Google Account? The Google support doc linked by hardillb says "App Passwords can only be used with accounts that have 2-Step Verification turned on." If you don't have that, perhaps the error message is different with no link. – telcoM Jun 25 '22 at 21:17