My team has multiple filters setup to send out notifications of all issues that fall into the filters each Monday. For the last 2 weeks these emails have not come in. All users on the recipiant group are able to see the filter and all projects that it pulls issues from. We had our networking team look into it in case our email systems blocked them, but no emails were received. I tried manually triggering the subscription and no emails came out. We have still been recieving all other communications from Jira, its just these subscriptions that are failing to be sent.