“could not authenticate” / company’s SMTP

  • vdeflorian

    (@vdeflorian)


    7 years, 1 month ago

    Hi guys and girls,
    I’d like to use Easy WP SMTP with my company’s SMTP (MS Exchange). I’ve received the necessary configuration details. I’ve double checked with raidboxes as the hosters, to make sure we have whitelisted the right IP and that connection to the port is not blocked by there firewall or anything else.
    However, I still get the debug log

    CLIENT -> SERVER: EHLO notdisclosing.myurl.com
CLIENT -> SERVER: STARTTLS
CLIENT -> SERVER: EHLO notdisclosing.myurl.com
SMTP Error: Could not authenticate.CLIENT -> SERVER: QUIT
SMTP Error: Could not authenticate.

    My IT department has pointed out the fact that Basic Authentication is only allowed once a TLC connection has been established.
    And honestly, I don’t know how to make sure this is the case. Could you help me out, please?

    Best
    Florian

Viewing 4 replies - 1 through 4 (of 4 total)
  • mbrsolution

    (@mbrsolution)

    7 years, 1 month ago

    Hi Florian, thank you for reaching out to us.

    Please read the following page. It can be very helpful in troubleshooting this issue:

    https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

    Let me know how you go.

    Kind regards

    • This reply was modified 7 years, 1 month ago by mbrsolution.
    Thread Starter vdeflorian

    (@vdeflorian)

    7 years, 1 month ago

    Hi mbrsolution,
    thank you for the reply. As this link was already mentioned in the sticky post, I have “read” it, but honestly, I do not really understand much of it as I am no coder. To understand the document, I’d need a little more knowledge, that I don’t have. E. g., there are quite some code lines in it and I don’t event know, where to add / execute those.
    Furthermore the document refers to the PHP Mailer Package. Does this mean I’ll have to install additional plugins / software in my WordPress installation? I had thought the php mailer was a core function wordpress php.
    Best regards

    mbrsolution

    (@mbrsolution)

    7 years, 1 month ago

    Hi, you might have to speak to your host about this issue. There is not much more we can do. The plugin works as it is and in your case it is not authenticating the client. Something is blocking this. Let me know what they say.

    Kind regards

    mrkl

    (@he2014)

    7 years, 1 month ago

    i have the same problem with Raidboxes and Easy WP SMTP.
    Hope there is a solution for this…

Viewing 4 replies - 1 through 4 (of 4 total)

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