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Thread: plain authenticator failed - SMTP

  1. #1
    Join Date
    Sep 2011

    plain authenticator failed - SMTP

    I recently installed prestaShop and set E-mail settings to use SMTP instead of PHPmail, the SMTP settings are correct (like in MUAs), e-mails are sending/arriving OK to clients but suddenly I noticed getting that error in exim's log everytime the shop sends an e-mail.

     plain authenticator failed for ( []: 535 Incorrect authentication data (set_id=xxx@xxx.tld)
    domain/mail obfuscated

    So, that error occurs but e-mail is delivered OK.

    When I change SMTP encryption settings from 'none' to eg. 'TLS' in prestaShop (as I'm using in MUAs like Thunderbird with NO error) here there is an error
     SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from [] input="\026\003\001"
    And of course no mail is sended.

    In that case doing
    openssl s_client -starttls smtp -crlf -connect
    SSL handshake has read 2345 bytes and written 482 bytes
    New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
    Server public key is 1024 bit
    Secure Renegotiation IS supported
    Compression: NONE
    Expansion: NONE
        Protocol  : TLSv1
        Cipher    : DHE-RSA-AES256-SHA
        Session-ID: A68184AEDAA3D92629F7827BA67F9F8BC05EB53393AC2C764B8EE866F4BA5E1C
        Master-Key: 01E62FB5BEF415615DD53B25ACED3AB3849A580564B996EB3150A84882E25D73D727939F22E20AEABF4BE76EE7EAAFC5
        Key-Arg   : None
        Krb5 Principal: None
        Start Time: 1353063581
        Timeout   : 300 (sec)
        Verify return code: 18 (self signed certificate)
    250 HELP

    When I use eg. Thunderbird as the same outgoing server settings there is NO such error and mails are delivering NP. This is only script that sends emails using SMTP so I don't know if it's a DA specific case or prestaShop - if don't - please feel free to delete this thread.

    I'm using SpamBlocker4.1
        driver = plaintext
        public_name = PLAIN
        server_prompts = :
        server_condition = "${perl{smtpauth}}"
        server_set_id = $2
    As for now I stuck with SMTP Encryption 'None' mails sending but full of errors in logs.

    Thanks in advance for any clue.

  2. #2
    Join Date
    Jul 2005
    Why care if it sent ok?

  3. #3
    Join Date
    Apr 2005
    GMT +7.00
    Quote Originally Posted by Tootle View Post
    Thanks in advance for any clue.

    I'd guess it's a prestaShop issue. Did you check it's forums and documentation?

    I'm not sure, but this might be helpful
    With regards, Alex.

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