Torsten Giebl wrote:

Is a downgrade from Mailman 2.1.15 to 2.1.13 possible ? I know downgrades are not officially supported. If it is possible, what do i have to do ?

It should be possible without problems, but why do you want to do this. Perhaps what you want to accomplish can be done by configuration changes in Mailman 2.1.15.

Assuming you installed Mailman 2.1.15 from a GNU Mailman project tarball distribution, downgrade would be accomplished by downloading and unpacking the 2.1.13 tarball (See <https://launchpad.net/mailman/+download?memo=10&start=10>), and running configure and make, stopping Mailman and possibly the web server, running make install and starting the stopped services just as you would for an upgrade.

Note that make install runs bin/update which will detect the downgrade, issue a warning and do nothing. You can ignore the warning in this case.

Not that this process won't work for all downgrades because of irreversable database changes that have occurred, but it should be OK for 2.1.15 -> 2.1.13.

-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan