We receive several ERRORs in our mail logs regarding Jira Mailhandler

[Deleted user]

Hi,

we receive following Errors (just an log extract) affecting the creation of issues via email. I don't know why they occur nor do I know how can I resolve them or what they mean specifically. Additionally we notice some strange behavior in the issue creating via mail process:

1. Sometimes attachments are missing and the message: "An Error occured while adding attachments  from source mail... please send the mail again" gets posted to in an issue. We already tested different attachments types and sizes and this problem appears randomly to attachments like .pdf, .jpeg... and sizes from 1Mb - 20MB (which is max.). Even if we sent the same mail 10 times the Error occurs in 1 - 2 cases.

2. The mail processing takes a long period of time. When i send a mail into our system the issue gets created after 30 - 60 mins. This time period is increasing since the date we set up our instance, so could it rely on the increasing amount of issues? When we started our instance issues got created nearly instantly.