We are running OSTicket version 1.12 with PHP version 5.6.40. We have web hosting provided through GoDaddy. We have been using the PHP mail function for sending out email updates on tickets, but since around the beginning of the year this has only intermittently worked. We have not made any internal changes to OSTicket on my company's end to cause this. We have also tried to setup outgoing SMTP mail settings but have not been able to get this to successfully work through GoDaddy. Outgoing emails will sometimes start sending, but this only lasts for several days before it stops again. Looking for any assistance on the matter. Thank you.
Outgoing Emails Not Sending
osTicket recommends using SMTP servers to send email. I believe that others have discovered the GoDaddy servers block smtp. You would need to talk to GoDaddy support to confirm this.
As far as using local host if it works intermittently then it sounds like perhaps goDaddy is doing something to prevent you from sending emails. You would want GoDaddy support to look into this also.
Thank you for the response. I will follow up with GoDaddy then to see if they can provide any further help.