Web security appliance vs DNS filtering

[PP Mguire]

Yes.

 

[Yami]

Our incoming emails have to pass verification or they get dropped. So if sendgrid was blacklisted in DNS, the verification would fail, correct?

Quite probably, yes!

 

[superdave1984]

Well, we removed all the DNS sinkhole entries and BOOM, now they get emails. All the URLs are blocked in the WSA so I am not worried about them anyway.