[cheesegrits]

Thank you for creating the pre-sales question forum!

In the description for the LFS, it says "It can verify email servers and accounts in realtime."

Can you tell me exactly how you verify the account?

Here's my situation. I run an ISP, and we have a vBulletin based site for customers only. Our obvious requirement is that you have an email account with us in order to register.

I have half a solution, which involves "reversing the polarity" of the is_banned() feature in vBulletin, so instead of a set of domains which aren't allowed to sign up, I have a set of domains which the registration email must be a member of. This gets rid of a lot of the outright bogus signup attempts, and user typos.

However, I'd still like to verify the address against my server(s) before the confirmation emails go out. I'm working on a simple LDAP based query mechanism, but happened to notice the LFS product a few days ago. Which may be what I need ... depending on exactly how it handles verifying an address.

-- hugh

[Code Monkey]

It checks the server by initiating an email from/to the address. When the server says it's ok to proceed it drops the request and returns it as valid. However, not all servers allow this.

Custom versions can be done.

[cheesegrits]

Originally Posted by Code Monkey

It checks the server by initiating an email from/to the address. When the server says it's ok to proceed it drops the request and returns it as valid. However, not all servers allow this.

Custom versions can be done.

Great! That should work for me, as LFS would be talking to the "real" mailbox servers, rather than the public relays. The difference being that that the relays will accept mail regardless, whereas the back end will actually tell the "truth" about RCPT TO addresses.

I would of course prefer an LDAP option. Is this something you have considered? If a site has an LDAP service, although the initial configuration of the exact query requirements might be a little more complicated, the actual querying would be quicker, easier, and more reliable than the "fake delivery" method. This being exactly the kind of thing LDAP is intended for.

-- hugh

[Code Monkey]

I have to be careful with a publicly available script that access unknown servers since there are many things you can do that will tag you as a spammer.