Using Jira "Receive replies at"
Summary
When using the Receive replies at feature within the Jira SMTP Mail Server configuration will add a Reply-To header with this configured address. If you are using this feature it is recommended not to configure the Custom Reply-To features within the JEMH Notification Mappings (highlighted below) at the same time, as this currently results in two Reply-To headers being added at the same time which can cause unpredictable outcomes if a reply was sent.
Related Fields configuration
Jira Receive replies at configuration
Below is a screenshot of when editing an SMTP Mail Server within Jira Admin > Outgoing Mail
JEMH Reply To configuration
The Reply-To notification configuration is found within JEMH > Notification > Transports and then pressing the edit icon on a relevant Notification Mapping. Below is a screenshot of the Custom Email Modifications section within a Notification Mapping