Sender Domain Reputation Filtering

Sender reputation acts on messages during two phases of the smtp session.

Sender domain reputation filtering. Sender reputation acts on a message only if the message was blocked or otherwise acted on by the connection filtering agent sender filter agent recipient filter agent or sender id agent. Enabling sender domain reputation filtering onciscoemail security gateway note afteryouupgradetoasyncos12 0 sdrqueriesareenabledbydefault. Trusted blocked throttled accepted editing sender reputation filtering. Therefore you shouldn t rely on the sender filter agent only.

The sender id agent uses the originating ip address of the sending server to verify that the domain in the mail from. To allow senders to not be scanned by reputation filtering you will need to setup an alternate sender group and define the connection smtp hostname ip into it. Veryfewfalse positives high performance moderate installation default somefalsepositives 4to10 10to 2 2to 1 1to4 maximum performance. Step3 checkenable sender domain reputation filtering.

Use the sender filter agent and the sender id agent together. The sender id agent uses the originating ip address of the sending server to verify that the domain in the mail from. If the legitimate sender has a very poor reputation that matches the blacklist it will be rejected as per the mail flow policy on the blacklist. Before going on to talk about how to delist from sender score reputation network it ll make sense to first look at what the sender score is all about.

Smtp header matches the domain that s registered. If we have this do we need anything else such as a content filter that blocks messages that score an sdr 10 to 3 or is the sender group setting sufficient to block any domain with an aw. Step1 gotosecurity services domain reputation. For more information about the sender id agent see sender id.

At the mail from. In this case sender reputation retrieves the. Step3 checkenable sender domain reputation filtering. This is a score in the range of 0 to 100 ranking the reputation of an ip address from 0 as the worst to 100 as excellent.

Enabling sender domain reputation filtering onciscoemail security gateway note afteryouupgradetoasyncos12 0 sdrqueriesareenabledbydefault. Procedure step1 gotosecurity services domain reputation. Wildcard characters can be used in the local part of an email address but cannot be used in the domain part of email addresses. Instead you should use both the sender filter agent and the sender id agent.