Q. I’ve recently changed email user account password using passwd command, for one my postfix email server which requires SMTP authentication before sending an email. Now following error is logged into my /var/log/maillog file: ERROR: Password not accepted from server: 535 5.7.0 Error: authentication failed: authentication failure How do I solve this problem under Red … Continue reading "Postfix SASL ERROR: Password not accepted from server: 535 5.7.0 Error: authentication failed: authentication failure"
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