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

Actually there was an excellent discussion on this on the domino400 list
just this week.  Suggest looking at the archives.  There are some top level
Lotus/IBM support people lurking on that list.  One of them gave the
response.

Rob Berendt

==================
A smart person learns from their mistakes,
but a wise person learns from OTHER peoples mistakes.


                                                                                
                                         
                    "Kenny Breeding"                                            
                                         
                    <kbreeding@hici.net        To:     
<MIDRANGE-L@midrange.com>                                         
                    >                          cc:                              
                                         
                    Sent by:                   Subject:     How to stop mail 
relaying (SPAM) on Domino mail server       
                    owner-midrange-l@mi                                         
                                         
                    drange.com                                                  
                                         
                                                                                
                                         
                                                                                
                                         
                    05/24/01 02:21 PM                                           
                                         
                    Please respond to                                           
                                         
                    MIDRANGE-L                                                  
                                         
                                                                                
                                         
                                                                                
                                         




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



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