Names changed to protect the guilty: I joined a Big Dinosaur Company early enough that they were still using mainframe RACF as the system-of-record for authent

Names changed to protect the guilty: I joined a Big Dinosaur Company early enough that they were still using mainframe RACF as the system-of-record for authentication, flowing downstream to LDAP. So indeed I received, for example, dlg28 as my ID and stem for e-mail address. However after several years the SoR was migrated to Windows LDAP ( can't remember its brand name ) and it generated 'sensible' IDs for all the newer staff. So someone received JimSmith as ID & e-mail address. We oldies felt old and uncool! So a project introduced self-selected e-mail aliases for the oldies, which then led to interpersonal conflicts because jsm22 wanted JimSmith@, but the 'new' Jim Smith already had that... But jsm22 felt he had title to it since he had worked there 40 years etc etc So he was given JimBSmith@ which of course led to misdirected e-mail. Hilarity ensued. I'd rather they had never introduced the long-form IDs at all!