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Appliance Blocking Legitimate NDR's and Out of Office Messages

astevens

We are having an issue with legitimate NDR's and Out of Office messages being quarantined as spam. When I look at the reason it is almost always our "Bounce Messages" rule. i don't want to shut this rule off because backscatter spam has been a big problem for us. I have a support ticket open but it seems to have gone into the "Sophos Labs" black hole. 

Any ideas for ensuring legitimate NDR's and Out of Office messages are delivered?



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    It may be that the domain sending the NDRs is not using the BATV tag correctly. If you check the headers of one of those quarantined email messages the recipient should have a prvs= with a code. Otherwise the appliance will not recognize that message as a legitimate returning bounce.
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    It may be that the domain sending the NDRs is not using the BATV tag correctly. If you check the headers of one of those quarantined email messages the recipient should have a prvs= with a code. Otherwise the appliance will not recognize that message as a legitimate returning bounce.
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