Suddenly notifications stopped working. Here is one example:
Using notifications helper I see that I receive notifications on comments in particular issue. After I add a comment I see new emails in Mail Queue which are sent. But they are not delivered into my inbox.
I enabled DEBUG logging level for outgoing mail but in atlassian-jira-outgoing-mail.log there is nothing. Looks like messages are not sent.
Sending test message works well. Any ideas?