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Issue Plesk Obsidian Roundcube SMTP Error (535)

Pradeep

New Pleskian
Hello,

I recently update plesk to Obsidian Version 18.0.21 Update #2 and after update I am not able to send email from roundcube and getting error: "SMTP Error (535): Authentication failed.". Please help

Regards,
Pradeep
 
Try to do following:

  1. Create a backup of the original file:

    # cp -a /etc/postfix/master.cf{,.bkp}

  2. Modify /etc/postfix/master.cf file by changing from:

    Code:
    smtps inet n - - - - smtpd -o smtpd_tls_wrappermode=yes

    To:

    Code:
    smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes

  3. Restart Postfix:

    # service postfix restart
 
Try to do following:

  1. Create a backup of the original file:

    # cp -a /etc/postfix/master.cf{,.bkp}

  2. Modify /etc/postfix/master.cf file by changing from:

    Code:
    smtps inet n - - - - smtpd -o smtpd_tls_wrappermode=yes

    To:

    Code:
    smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes

  3. Restart Postfix:

    # service postfix restart

The value is already same as mentioned by you.

smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes

Please help
 
Last edited:
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