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  1. #1

    Cannot send email

    Receiving works fine, but unable to send email from the server
    Here are the error messages
    dovecot_login authenticator failed for localhost []: 435 Unable to authenticate
    error message in horde
    There was an error sending your message: authentication failure [SMTP: Invalid response code received from server (code: 435, response: Unable to authenticate at present)]

    Any ideas would be helpful.

    Thank you.

  2. #2
    Restarting dovecot seems to have fixed the problem

  3. #3
    Join Date
    Jul 2009
    I've come across this problem before.
    Usually it happens because outport 25port is blocked to avoid spam or it is blocked by your own firewall.
    The second,check your dns record.
    Nice to know another mothed!
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