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pop before smtp is not the best way to do it for multiple reasons, I highly suggest smtpa or smtpsa (using esmtp auth feature and tls for encryption), for this you have to install sasl (authentication sublayer) you can configure sendmail to check via sasl for valid users in your std passwd/shadow file, and allow relaying for them ...

try to google: smtp auth sasl sendmail

CU Greg

On Thursday, August 14, 2003, at 10:58 AM, remote wrote:

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Hi !

I administer a small network of Linux and Windows boxes, using a SuSE 8.0 Professional box as router, firewall and mail server. Everything is running fine right now, except for one little thing :

I want my users to connect to my mail server from outside my domain, so that they can send e-mails using their mail accounts on my server. Right now, they can download their mail from outside via POP3, but are not allowed to send any mails, unless the mail is addressed to a local mail address. What do I have to do so that my users can use their local accounts to send mails to non- local addresses. For security and anti- spam reasons I´d like to implement some sort of POP3 before SMTP- policy so that only authenticated users can send mails. I use Sendmail 8.12.2, no modifications.

Any suggestions ?

Thanks