Support » Plugin: WP Mail SMTP by WPForms » Authentication issue

  • Hello

    I have this plugin set up on a client’s website using the Divi Contact form.

    It was working fine for a while, but yesterday the client said he’s stopped receiving mail. I tested it and got this:

    CLIENT -> SERVER: EHLO astutesalessolutions.com
    CLIENT -> SERVER: STARTTLS
    CLIENT -> SERVER: EHLO astutesalessolutions.com
    CLIENT -> SERVER: AUTH LOGIN
    CLIENT -> SERVER: QW5kcmV3Lm5lYWxAYXN0dXRlc2FsZXNzb2x1dGlvbnMuY29t
    CLIENT -> SERVER: Qm13NzMwZCox
    SMTP ERROR: Password command failed: 535 5.7.3 Authentication unsuccessful [BN6PR1201CA0015.namprd12.prod.outlook.com]
    SMTP Error: Could not authenticate.CLIENT -> SERVER: QUIT
    SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

    He said he had changed his Outlook password, so I tried the new password, but it still didn’t work.

    I’m not sure why this is suddenly happening and have no idea how to fix it.

    Can anybody help?

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