Hello, Here's my setup: * Ubuntu 18.04 LTS * Postfix 3.3.0 * Mailutils 3.4 * Samba 4.7.6 * Active Directory (provided by Samba)
My usernames are of the format: * DOMAIN\username I can separately maintain a list of mappings between DOMAIN\username and username. Here are the problems I'm looking to solve appropriately: * mail - sends the origination user as "DOMAIN\username", which postfix provides onto the destination mail exchanger, which rejects it as being an incorrect format * postfix - is configured with: local_recipient_maps = proxy:unix:passwd.byname $alias_maps which flattens the return address to "domain\username", and creates a mailbox in /var/mail as "domain\username". When the user types "mail" to read their email, it opens "DOMAIN\username", so they never see their newly received messages. Things I have tried: * Using sender_canonical_maps = hash:\etc\postfix\sender_canonical to change a specific DOMAIN\username to username. It didn't work, although I could see it parsing sender_canonical.db when sending. The exact line was DOMAIN\\username : username Postfix still provided "DOMAIN\username" as the originator to the destination mail exchanger. * Using recipient_canonical_maps = hash:\etc\postfix\recipient_canonical to convert a specific username back to DOMAIN\username. That failed because the output is still casefolded to domain\username before writing to the mailbox file. Questions: * Am I trying the right approach to rewriting the originating email address from DOMAIN\username to username? What am I potentially missing to get it working? * As postfix will always fold the return address to lowercase (because of the local_recipient_maps filter), should I just softlink together the mailbox files DOMAIN\username and domain\username in /var/mail, or is there a solution I can put into postfix to revert back to DOMAIN\username before outputting to the mail file? Thanks in advance, -- Nick
