Hi All
A bit of a strange issue and I would appreciate any help I can get.
I have an issue with my WHMCS sending emails.
For the most part, they all seem to work. However ticket notification emails, such as New Ticket emails, New Reply emails etc don't send.
I've checked the activity log and can see this error:
Email Sending Failed - SMTP Error: data not accepted. (Subject: [Ticket ID: 580043] for purchasing VPS.)
I've tried amending some settings but can't figure it out. All other emails (as far as I am aware) send fine, such as New Orders, VPS information etc...
Edit: Thought I'd add on that I am using Office365 as my mail server.
Any ideas?
Cheers
Mitchell