Blocking Mail Relay or Spamming (Novell TID 2954070) The ability for the GroupWise Internet Agent (GWIA) to be used as a relay host can be turned off in the GWIA […]
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How Not to be a open Relay using the Mercury mail server, by Iain Moffat,UF
How to close relay on Mercury, by MAPS TSI
Download the latest version of MercuryMercury versions prior to 1.40 do not have provisions to prevent unauthorized relay. If you are running a earlier version, pleaseupgrade.
To disable relaying, the following text should be added to the [MercuryS] section of the mercury.ini file. “Relay: 0” signifies normal relay mode where mail will be accepted for relaying if the originator’s address is local.
Relay : 0
For stricter relaying, add the following text to the mercury.ini file. In strict mode, if the originator’s address is local, Mercury additionally checks to see that the IP address of the SMTP client making the relay request is covered by an explicit “Allow” entry in the [MercuryS] section fo the mercury.ini file.
Relay : 0
Strict_Relay : 1
Allow : 188.8.131.52 # The offsite backup (MX server)
Allow : 128.227.XXX.0 # Our local network
Allow : 128.227.YYY.5 # A single other machine we allow
Blocking Mail Relay or Spamming (Novell TID 2954070)The ability for the GroupWise Internet Agent (GWIA) to be used as a relay host can be turned off in the GWIA details Access Control screen. (Access Control | SMTP relay | Prevent message relaying | OK.) After relaying has been turned off the GWIA must be restarted.