Hi,
We're trying to migrate from 2.1.x to 3.1. In the process we want to modify old setup in which mailing lists were part of our normal mail domain (so both user accounts and ML would be under @x.stanford.edu) in new scenario we want to move ML into @lists.x.stanford.edu, yet preserve addressing compatibility with old naming scheme. To that end we thought of making following setup:
list@x.stanford.edu -postfix:alias-> list@lists.x.stanford.edu
however in this setup users will receive mail from the "unknown" domain for them so any filtering they've done will break. Is there a configuration change we can make for those old ML to spoof old ML emails? so they would look as if they came from list@x.stanford.edu ?
-- Sr System and DevOps Engineer SoM IRT