I am trying to set up a Postfix mail server to take emails to a certain domain and redirect them to external email addresses based on LDAP information. I am new to Postfix and LDAP. Back story -- we no longer want to host email accounts for a certain domain and have directed members of that domain to provide a "preferred" mailing address (which include Gmail, Hotmail, Yahoo addresses) and this server will perform that relay/forwarding function. I have got the server set up and an ldapsearch provides the correct information based on parameters fed but when testing the Postfix mail delivery, the mail is misdirected to similar named accounts. My successful ldapsearch command is this: ldapsearch -x -H ldap://ldapserver.example.com:389/ -b "ou=People,o=oldserver.example.com,o=example.com" -D "uid=admin, ou=Administrators, ou=TopologyManagement, o=NetscapeRoot" -w "bindpw" "(pdsLoginId=user)" mailForwardingAddress
I have these lines in my main.cf: alias_maps = hash:/etc/aliases, ldap:/etc/postfix/ldap-virtual-aliases.cf virtual_alias_maps = ldap:/etc/postfix/ldap-virtual-aliases.cf The content of /etc/postfix/ldap-virtual-aliases.cf is: server_host = ldapserver.example.com:389 search_base = ou=People,o=oldserver.example.com,o=example.com bind = yes bind_dn = uid=admin, ou=Administrators, ou=Management, o=VendorRoot bind_pw = bindpw query_filter = pdsLoginId=%u result_attribute = mailForwardingAddress I am using the query filter with the %u to only use the user part of the original email address. I would like to forward/relay the mail to the mailForwardingAddress attribute from the LDAP info. I do not have control of the LDAP server. Can you suggest what I am doing wrong or point to appropriate how-tos that would assist. Thank you in advance.
