Hi, I got an issue Mailer Error "Unable to email via php mail function Invalid header value detected" on system logs which causes email notifications not to be sent via post reply on osTicket. osTicket v 1.17 RC4
Thank you
enggal
You need to upgrade to v1.17 stable and download and install the latest build of the OAuth2 plugin. Once you do that you’ll also need the below patch:
Cheers.
