Hi Guys, any help is appreciated.I'm running the latest osTickets v1.9.14I'm having some issues when trying to send emails through SMTP.Unable to email via SMTP.office365.com Failed to set sender: sales@part-box.co.uk
When I reply to a Gmail/Office 365 email address, it all works fine.Sending to a hotmail address just doesn't work and I get the above error in my logs.the address sales@part-box.co.uk is a shared mailbox, but I have definitely had it sending/working to all email addresses in the past.It's just randomly stopped working to some address'I ran a diagnostic test email in osTickets and it came back fine. I've also tried other email addresses with office365 liscenes, still no luck.Could this be a hotmail retrieving issue?Default MTA: sales@part-box.co.ukSMTP status: enabledHostname: outlook.office365.comPort: 25Authentication: NoRunning PHP Ver 5.6.19Kind Regards,Sam