I'm using log4j-1.2.13 in a tomcat webapp. I've configured log4j to
send an email for errors of category ERROR and higher. Our old
configuration was
SUN's javamail-1.3.1-2jpp and tomcat5-5.0.30-11jpp. The generated
message ids were of the format
30810565.1172372608329.JavaMail.tomcat4@<fqdn of the server>
tomcat4 is the UNIX user of the tomcat5 installation. The numbers
were constantly changing, so we had no duplicate message ids.
No we moved to a new system where we use classpathx-mail-1.1-1jpp
and tomcat55-5.5.17-4jpp. The format of the message ids is now
1677625.1177554343570.JavaMail.tomcat@<only hostname of the server>
tomcat is the UNIX user of the tomcat55 installation. The numbers
are not constantly changing, so we have lots of duplicate message ids.
The problem is, that my cyrus-imapd eliminates all mails with the
same message id, so we're losing a lot of mails here.
As I don't know who creates these message ids I'm asking you if
that could be a javamail problem or a log4j problem.