Am 17. Feb, 2004 schwätzte elemint@hotpop.com so:

> I want to install a Linux email gateway in front of our Lotus Notes
> email server.
>
> While most of the users are internal some of them are external and use
> pop to download email and SMTP to send email from home using the Lotus
> Notes server as the SMTP server.

Is the Notes server also the pop/imap server? Can you do pop and imap over
ssl?

> If the email gateway is placed in front of Lotus Notes server to send
> and recieve email via pop would there be any foreseeable problems?
> Basically they connect to the email gateway there password is checked
> and if good then they can download email via pop or send email via
> smtp.

If pop/imap is handled by the Notes server you might need to do some
userspace firewall manipulation. Essentially, you'd setup a second IP that
gets forwarded directly to the Notes server and skips the GNU/Linux email
gateway. You'd then leave that IP firewalled. When someone auths for
pop/imap you'd kick off a script that allows their IP to talk to the Notes
server on SMTP for whatever time you want the window to be.

You might also be able to kick off a script to allow them to connect to the
GNU/Linux SMTP server, but I don't know if that feature is available.

> This email gateway is going to be for smtp messages sent to our domain
> and we want to use it for users checking via pop and sending messages
> via smtp.
>
> Can a Linux email gateway be prompted to only allow through email once
> they have authenticated via pop or to prompt for a username and password
> and it could use the same username and password they are using for pop.

That is possible, but there has to be a tie-in between the two servers. I'm
not sure that's available via a Notes server.

ciao,

der.hans
-- 
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