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Thread: Outlook or ThunderBird Not Connected SMTP 587 STARTTSL "No SECURE"

  1. #1
    Join Date
    Jul 2019
    Posts
    7

    Outlook or ThunderBird Not Connected SMTP 587 STARTTSL "No SECURE"

    Hi,
    I am installed and migration cPanel to Directadmin wonderfull and working.

    But Email not connected to 587 SMTP STARTTSL.

    Screen Shot : http://prntscr.com/ohe5nh

    Please help me.

  2. #2
    Join Date
    Jul 2008
    Location
    Maastricht
    Posts
    3,926
    Screenshot shows IMAP.
    Try using the imap outgoing port 993.

    As for 587, it might have something to do with a mail_sni setting, but I'm not sure.

    You might check this post from zEitEr with links in them:
    https://forum.directadmin.com/showth...357#post272357
    Greetings, Richard.

  3. #3
    Join Date
    Jul 2019
    Posts
    7
    I did it, but it didn't help.

  4. #4
    Join Date
    Aug 2006
    Location
    LT, EU
    Posts
    8,008
    Please make sure port is open in firewall and /etc/exim.cert (key) are valid.
    Martynas Bendorius
    MB Martynas IT. Professional server management company. Official DirectAdmin, CloudLinux, LiteSpeed and Comodo partners.

  5. #5
    Join Date
    Jul 2019
    Posts
    7
    Quote Originally Posted by smtalk View Post
    Please make sure port is open in firewall and /etc/exim.cert (key) are valid.
    Hi,
    Firewall is closed.
    Exim.cert is new created.

    But not secure starttls SMPT :/

  6. #6
    Join Date
    Aug 2006
    Location
    LT, EU
    Posts
    8,008
    Please try the following, just use SMTP port, instead of IMAP: https://forum.directadmin.com/showth...932#post297932
    Martynas Bendorius
    MB Martynas IT. Professional server management company. Official DirectAdmin, CloudLinux, LiteSpeed and Comodo partners.

  7. #7
    Join Date
    Jul 2019
    Posts
    7
    https://www.checktls.com/TestReceiver results;
    Certificate 1 of 1 in chain: Cert VALIDATION ERROR(S): self signed certificate
    So email is encrypted but the recipient domain is not verified
    Cert Hostname DOES NOT VERIFY (xxx.com != mail.hostname.com)
    So email is encrypted but the host is not verified

  8. #8
    Join Date
    Jul 2019
    Posts
    7
    Quote Originally Posted by smtalk View Post
    Please try the following, just use SMTP port, instead of IMAP: https://forum.directadmin.com/showth...932#post297932
    Not problem.
    http://prntscr.com/ohiap7

    So;
    SMTP protocol synchronization error (next input sent too soon: pipelining was not advertised): rejected "EHLO we-guess.mozilla.org" H=[IP_ADDRESS] next input="QUIT\r\n"

  9. #9
    Join Date
    Aug 2006
    Location
    LT, EU
    Posts
    8,008
    Your certificate does not include mail.domain.com, so, just use domain.com as the server in your mail settings, or generate a cert for mail.domain.com as well.
    Martynas Bendorius
    MB Martynas IT. Professional server management company. Official DirectAdmin, CloudLinux, LiteSpeed and Comodo partners.

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