How to stop mail relaying (SPAM) on Domino mail server

["Kenny Breeding" <kbreeding@xxxxxxxx>]

My apologies for posting a Domino problem on the midrange list, but I felt someone must of had a similar problem...

 

Our Domino mail server is being over-run with bogus email addresses (over 400 in less than 1 hour), apparently by a spammer attempting to use it to relay email. We searched the Domino site which had the following solution...

 

 Solution:

To do this, set the following parameters on the Server Configuration document:

1. Open the Server Configuration document for the server on which you want to restrict relaying.
2. Select the Router/SMTP tab, and the Restrictions and Controls tab.
3. Then select the SMTP Inbound Controls tab, and under the Inbound Relay Controls section, set the following values:

Allow messages from external internet domains to be sent only to the following internet domains: <blank>

Deny messages from external internet domains to be sent to the following internet domains: *

Allow messages only from the following external internet hosts to be sent to external internet domains: <blank>

Deny messages from the following external internet hosts to be sent to external internet domains: *
4. Stop and restart the SMTP task.

However, when we made this setting,  the administrator account was the only account able to send out email, so temporarily we have had to remove the recommended fix, and are continuing to be bombarded with spam. Has anyone experienced this and found a remedy? Any help would be appreciated.

 

TIA,

Kenny Breeding
AS/400 Programmer
Haulers Insurance Co.
931-381-5406
800-346-6071