thanks for the detailed answer! As far as the port mapping, why port 587 instead of any below 65000?
Geza
At 12:51 PM 11/29/2004, you wrote:
You don't need two separate SMTP services.
Users who authenticate can always send mail through the server, so just have them authenticate when sending. You can allow relay for internal addresses to keep internal users from having to authenticate.
If you have a problem with port 25 traffic from some traveling locations, or with some ISPs, simply add a NAT entry to your firewall to map port 587 external to port 25 internal and have your traveling users use port 587 for SMTP.
If you don't have a firewall that you can configure the NAT on, then use a port mapper like the ones that were discussed on this list a couple of months ago.
Darin.
----- Original Message ----- From: "MIS Dept" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, November 29, 2004 3:35 PM Subject: [IMail Forum] safely using SMTP server from anywhere in the world
How can you configure the SMTP server service to allow company employees to use the SMTP service not just from their workplace (where the IMAIL server is located) but from home, any hotels, etc.?
I mean: safely.
Right now the SMTP server service is configured to accept mail only from the local subnet.
I know, that you can configure the firewall for any port forwarding, but how can you have two SMTP server services function simultaneously, one that receives messages from the world and one that is used by company employees from the outside for sending any mail to anyone?
Geza
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