DNS blacklisting vs whitelists

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KPE
Posts: 8
Joined: Wed Aug 29, 2018 4:22 pm

DNS blacklisting vs whitelists

Post by KPE » Fri Dec 13, 2019 3:51 pm

We have chosen to move all mails caught by DNS blacklists to the Junk E-mail folder (on a system level).

Sometimes good mails goes into the Junk E-mail folder, and we then tell people to whitelist those in the webmail interface.
However, the whitelisting doesn't prevent the good mails from entering the junk folder next time.

Could you fix this, so whatever you configure as a counter measure is overruled by the whitelisting.

KPE
Posts: 8
Joined: Wed Aug 29, 2018 4:22 pm

Re: DNS blacklisting vs whitelists

Post by KPE » Thu Jan 09, 2020 12:00 am

Do I need to create a support ticket (costing me money), to appoint errors in your software?
I think this needs to be addressed, as it otherwise doesn't make sense to have whitelist.

mheidelberger
Posts: 6
Joined: Wed Jan 08, 2020 5:20 pm

Re: DNS blacklisting vs whitelists

Post by mheidelberger » Thu Jan 09, 2020 3:38 pm

In the email headers is it being marked as junk?

Admin
Site Admin
Posts: 826
Joined: Mon Jun 10, 2002 6:31 pm
Location: Melbourne, Victoria, Australia

Re: DNS blacklisting vs whitelists

Post by Admin » Fri Jan 10, 2020 3:51 am

Check the headers of the email received to see what it was send as. i.e. try checking Return-Path of the email and see if it matches what they have entered in the whitelist (and make sure it is not in the blacklist).

KPE
Posts: 8
Joined: Wed Aug 29, 2018 4:22 pm

Re: DNS blacklisting vs whitelists

Post by KPE » Mon Jan 13, 2020 8:27 am

I've looked, and the return path is not the same as the from address - so that explains why it's then not working. But shouldn't it work regardless of that?

The system uses the from address when you click "Add to whitelist" in the webmail interface, so it's a little "tricky" if you need to explain to all users, that this is not working as expected.

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