Nevermind, I found the answer - try this:
I will raise the issue up to the project meanwhile a quick fix to make that mailet work:
- in the James app folder, open the file conf/mailetcontainer.xml
- find the mailet with class WithPriority
- replace the xml tag <value>8</value> by <priority>8</priority>
- try to run james server again
Looks like this in conf/mailetcontainer.xml
:
(...)
<mailetcontainer enableJmx="true">
<processors>
<processor state="root" enableJmx="true">
<mailet match="All" class="PostmasterAlias"/>
<mailet match="RelayLimit=30" class="Null"/>
<mailet matcher="All" class="WithPriority">
<priority>8</priority>
</mailet>
(...)