Emails not going thru to Outlook.com

[drewt]

Hi,
Customer has email [email protected] and the emails are not being delivered, they check junk/spam and it seems they are just being discarded. Multiple extensions use this email. I created a new email in gmail and they arrive just fine. Has anyone had a similar experience, and is there a work around?

Version 16.0.7.1078
Hosted on Lightsail

 

[drewt]

I had this same symptom a few years ago and 3cx help desk was able to tweak something and get emails to go through.

 

[cobaltit]

3CX uses SendGrid. If a message from 3CX bounces, the email is automatically blackholed for a week. So wait a week, or create an alias or us plus addressing to send to that mailbox.