For a certain email domain we are not receiving any Jira email notifications. We have already checked all spam folders, spam filter settings, blacklist and whitelist settings, etc.
For email addresses with other domains the Jira email notifications are working.
I have read in other posts that sometimes email domains are blocked on Atlassian side and their support needs to be contacted to remove the block. But as we are using the free Jira Cloud version I cannot create a support ticket with Atlassian.
How can I get our domain unblocked so that the notifications work?