WHATs the best cloud email filtering on the market right now?

Hi,
What's the best anti-spam-virus cloud filtering service that one can use before email arrive to my internal Exchange Service?
I use to use MXLogic which was bought by McAfee which discontinued the service and I moved to ZeroSpam which is not that good.
I have been told ProofPoint is really good but couldn't find any reviews or gatner,
tx!
philjansAsked:
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Saif ShaikhServer engineer Commented:
There are various smart-host providers like Mimecast, reflexion, Barracuda Ironport/ESA device apart from proof point.

You can also update SPF record for your domain by including exchange server public IP to be safe from SPAM.

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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
As Saif suggested, the 100% best protection is a combo of correct SPF + DKIM + DMARC records all implementing strict mode.

Strict Mode means anyone trying to send email on your behalf must be authorized by you, via SPF + DKIM signing.

Any unauthorized sender will have email bounced by all Mailbox Providers implementing correct SPF + DKIM processing.
Michael B. SmithManaging ConsultantCommented:
I really like modusCloud by Vircom.
philjansAuthor Commented:
thanks for the info
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