We have noticed that some incoming email from Atlassian for Jira ticket response notifications are attempting to spoof the respondents’ email addresses from our domain.
In an attempt to temporarily allow these spoofed emails to reach use, we added _spf.atlassian.net to our SPF record. However, the source IP addresses of the incoming spoof email does not match any of the IP ranges included in _spf.atlassian.net.
We would like to stop Jira from spoofing our domain. If this is not possible, we need to know the correct information to add to our SPF record.