- Plesk Onyx for Windows
Unable to send an email from one particular mailbox using Horde webmail (MailEnable is used as mail server):
PLESK_INFO: Error : there was error sending your message , server authentication denied
A website script that is using this particular mailbox for sending emails fails to be executed.
It is possible to send emails from other mailboxes on the same domain.
Reset a password for the mailbox at Domains > example.com > Email Addresses > firstname.lastname@example.org. Apply the changes.