What happens when two unrelated jira instances email each other?

[bradmace]

We have several email addresses that feed into Jira service desk.

If one of our partners that also uses Jira service desk adds one of these addresses  on a ticket in their system, what happens?

Will our Jira create a ticket? If we comment on our local ticket, will those notification emails go to their system and add the comment their as well?

Is this situation supported, or should we try to avoid it?

[Nic Brough -Adaptavist-]

Yes, you could throw the two of them into a comment loop if you're not careful!  JIRA doesn't "know" that an incoming email might be from an automated response, so both ends will treat any incomign email as an update...