Hi,
I have read your mail, and we're using a setup similar to yours (samba,
postfix, debian) and we're using 'regular' usernames, without the domain
prefix.
Sometimes, but only in windows, we specify a domain name to make clear
to windows that we mean the DOMAIN account username, and not a local
account, or DOMAINB\username.
But in common practise, we never login anywhere with DOMAIN\username
And we also never have the issues you are describing, and no need fotr
mappings of any kind.
Are you *sure* you need your usernames in that format?
MJ
On 26/05/2020 13:50, Nick Piggott wrote:
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,
