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Ayan HoreAyan Hore 

Sandbox with IP restriction does not send emails to Office365

Hi,

I've a Office365 account and when I tried to do a "Test Deliverability" from a Sandbox, I'm not getting emails. Already checked the "Deliverability" and all emails are allowed. Following are some of the observations:
  1. Sending mails to hotmail.com or gmail.com also does not result in success. Still mails are not being sent. This leads me to believe no issues with Office365, rather an issue with Sandbox.
  2. When sending mails from Case feed (Lightning), the mails are being delivered to Office365. This is contradicting with #1 above.
  3. There are IP restrictions imposed with some IPs listed in "Network Access" as well as Login IP ranges set at profile level. Initially thought this might be causing issues (either that or Office365), however, since #2 is working, this assumption is not clear.

If anyone can help with this (maybe faced and resolved the issue in the past), that'll be very helpful.

Cheers!
Ayan