we have an account on office365. from May 18th 2019 we are facing some issue in delivering the e-mails to groups. some of the group members are not receiving the e-mails some times. This is especially when
in our site contact tab fill the form. once they fill the form and save the e-mail will be drafted to sales group but some users in the group are not receiving the e-mail and for some uses in the sales group receives an e-mail but moved to Junk folder.
please let me know is there any new release by office365 that is blocking.