SMTP Authentication Helper for External Users
Is there a way that astaro developer can patch exim to do some smtp authentication helper to the SMTP server protecting by astaro. For example i have hundreds/thousands of roaming users and all their pop3/smtp is in the mail server. We all know that when MAIL security is enabled we need to create a smtp user on the ASG and that user will be use for the roaming users. Many clients does not agree with this espcially who have many users changing their mail client is a huge job.
Patrick Lenz commented
I strongly support this feature request. We have multiple clients with account data stored in MySQL databases, which are not available to the ASG authentication plugins. Thusly, simply passing through the authentication information to the destination SMTP server is an elegant way around duplicating all the user credentials on the gateway or making the backend server available on a different port (yuck).
yes on LDAP or AD is no problem, but what if its using different backend like mysql or others.
what im saying that for example exim will pass the login authentication to internal mail server.
250-AUTH PLAIN LOGIN
235 Authentication succeeded
Exim will relay the credentials to the internal mail servers if mail server said its auth ok exim will allow you to relay.
Elmar Haag commented
I don´t understand what feature Paolo excalty wants to have.
You do not have to (manually) create all the 100s or 1000s of users locally on the ASG. If you have so many users, their credentials (username/password) are probably stored in a directory like LDAP or so? You can then define one lsap group on the ASG and use this group inside the "authenticated relay" configuration. So all uses can authenticate to the ASG with the exactly same credentials as they are using to their mailservers.
Is this the feature you are looking for?
i mean if ASG mail security is cofigured, all roaming email users must use the defined SMTP users at the advance tab. This is not very acceptable to the users changing all their smtp authentication.
Bob Alfson commented
"We all know that when MAIL security is enabled we need to create a smtp user on the ASG and that user will be use for the roaming users." - Can you say that in a different way, I don't understand. Thanks - Bob