OK thank you for this response. I have one more quick question. In this situation can i still use /etc/postfix/aliases file to add some simple aliases or this file is not used anymore if i do AD implementation and i need to do ALL of this things into AD ?

Yes i have it and i put this in it on the bottom :
cats:admin

after it i did 'newalias' command and restarted postfix service but now when i try to send a mail to the alias (cats@xentio.local) that suppose to fwd this to the real box admin@xentio.local it still not working and something strange happends , here is the example :

telnet cancer.xentio.local 25
Trying 192.168.1.2...
Connected to cancer.xentio.local.
Escape character is '^]'.
220 cancer.xentio.local ESMTP Postfix
helo dude
250 cancer.xentio.local
mail from:<test@test.com>
250 2.1.0 Ok
rcpt to:<cats@xentio.local>
550 5.1.1 <cats@xentio.local>: Recipient address rejected: User unknown in virtual mailbox table
rcpt to:<cats@cancer.xentio.local>
250 2.1.5 Ok

  So .. its still not working for @xentio.local i check my main.cf file that is generated by iRedMail everything looks OK :
virtual_alias_domains =
myhostname = cancer.xentio.local
myorigin = cancer.xentio.local
mydomain = xentio.local

So any clue why this happends ?

  Hi,
  I tried to put this (cats@cancer.xentio.local: admin) in /etc/postfix/aliases and run newaliases command after it but the command output an error :

postalias: warning: /etc/postfix/aliases, line 99: name must be local

If i understand the format right, in the left part of the file i can put only local users on the machine and i cannot put "@" symbol in this file.
So this solution is not working for me and i cannot use it in my case right ?

Yes i understand this too so to to finalize, there is no way to make a working alias for cats@xentio.local > admin@xentio.local using /etc/postfix/aliasses and i need to figure out how to do it from AD and after it to learn how to configure postfix-ldap backend to read this aliases from AD ?

hum, i setup a fresh AD integration.
Everything fine so far.

but how to ad an Alias in the microsoft AD ?
any idea ?

i use the "mail" Field for authenticating.

hum, yeah thats an option.
But not the greatest.

so i have to create  a Group for each user in case, someone needs a alias adresse.
but if this is the only option ....

Standalone mail alias is clear, and work perfect.

Alias adress of mail user is the problem, i will look into, but i think i have to wait till someone prepare the ground.
im good in "solve problems" but not in "create new features"

thanks anyway, greate and fast support, like the past years.

One Idea,
Maybe we could use the "proxyAdresse" Attribute from AD ?
Exchange also use this Attribute to store multiple mail adresses in this.

i use "mail" for primary too.

but i dont know how to config postfix for that, or prepare postfix.

sorry for stealing your time, but i will google for a solution too.
Maybe we could expand your wiki later.
I found some "bugs" and improved some parts.

and thnx ! you are helping alot ! and i learn alot

hm, researched a little bit,
you use the postconf -e virtual_alias_maps= for the "ldap:/etc/postfix/ad_virtual_group_maps.cf"

so, could i use both options, like create a postconf -e virtual_group_maps for the groups
and virtual_alias_maps for a "ldap:/etc/postfix/ad_virtual_alias_maps.cf" ?

or is this a either ... or config ?

sorry for spamming,

but i found my fault

server_host     = 10.0.1.10
server_port     = 389
version         = 3
bind            = yes
start_tls       = no
bind_dn         = vmail
bind_pw         = psssst-secret
search_base     = ou=Users,ou=Team,dc=server,dc=local
scope           = sub
query_filter    = (&(objectClass=person)(mail=%s))
result_attribute= proxyAddresses
debuglevel      = 0

changed (forgot to change after copy the sample config from iredmail)

query_filter    = (&(objectClass=group)(proxyAddresses=%s))
result_attribute= mailForwardingAddress

Try to test it with:

postmap -q klaus.name@domain.com ldap:/etc/postfix/ad_virtual_alias_maps.cf

and it shows:

testb@domain.com, testa@domain.com

!

so now i need help to integrate this to postfix, no glue here.