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osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now

Cannot send emails to addresses outside my organization

I'm using v 1.10 (901e5ea) and the site will not send email to any email address outside of my organizations domain. The system log is full of Mailer Error messages. The specific messages are: Unable to email via php mail mail() returned failure. I've verified my settings in the email setup and everything looks correct. I've attached a couple of screenshots of what I'm getting. Has anyone else run into this issue before?


  • Please help us to help you by reading and following the posting guidelines located in this thread: Please read before requesting assistance. The more information you give us the better we will be able to assist you. Thank you.

    Also you seem to contradict yourself:
    • The screenshot you posted is sending from HT Support <> (SMTP).
    • Yet you told us that you were sending email via PHPMail function.
    You might want to show us your mail settings.
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