Hi,
Seems like we faced with known issue discribed here
Known issues
It might happen that the connection to the mail server breaks. If it’s not because your token has expired, you need to renew your consent. Go to Jira configuration > System > Incoming mail, click Edit next to the mail server and click Authorize.
Our session could breaks every hour, is there any way to fix this token expiration problem?
We use jira server + gmail.
