Anti Spam recommendation for a large organization.

Hello guys,
I was asked to recommend an anti spam solution for a large organization with over 18,000 on-premise exchange users. I would have loved to recommend Exchange Online Protection, but that is going to cost a fortune given the number of users.

I would like a reliable reasonably priced solution for that number of users. Please help.
Saviour EkpoSystem AdministratorAsked:
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Alexandre MichelManager; IT ConsultantCommented:
Have you though about using a 3rd party solution?

Emails are sent to them; they filter the emails and forward to you. You can manage the filtering at the company level. Users can release non-spam that were blocked etc...

We are using www.reflexion.net. They offer additional services like archiving, etc... They used to give a 30 day trial

TrendMicro is offering a similar solution: https://www.trendmicro.com/en_us/business/products/user-protection/sps/email-and-collaboration/hosted-email-security.html
Saviour EkpoSystem AdministratorAuthor Commented:
Thank you Alexandre Michel, I don't mind a 3rd party solution provided it is reliable and reasonably priced. It doesn't have to be cloud-based only too.
MichelangeloConsultantCommented:
You can also try Symantec Messaging Gateway.
SMG is an antispam/antivirus appliance which can be installed or provisioned on your hypervisor (they provide OVF files). Not on the cheap side but very effective and anyway should be cheaper than EOP. 30 days trial available.
Not easy to manage via devops
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Alexandre MichelManager; IT ConsultantCommented:
For a very cheap option see this: https://www.duocircle.com/blog/monthly-spam-filtering-service/ (US$17 per month - for the whole organisation). We have used them. Works as advertised, but lacks advanced management. If you want more control over spam filtering, reporting, etc see https://www.duocircle.com/email/email-gateway/

Reflexion I think cost ~US$0.75 per mailbox per month. However, this could be the cost for smaller organisations.
We use Reflexion for all our clients and are very happy with it

With any of these services, the more you pay the better the service . I.e. some services will open each attachments and test in a virtual environment for malware before forwarding the email. I have seen other services (Symanatec?) which replaces every links in emails with a link to Symantec that test the URL before allowing the customer to access the said URL

If you have access to an email domain with a smaller amount of mailboxes, I would test before going global.

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Saviour EkpoSystem AdministratorAuthor Commented:
Thank you Alexandre Michel, I am now looking into Duo Circle.
Steve AlderEditorCommented:
I recommend SpamTitan if you are still looking for a solution. Flexible, scalable, low cost, high catch rate and low false positives. Certainly worth a look if you dont have any joy with Duo Circle
Stuart HargreavesChief Operations OfficerCommented:
Happy to discuss the www.spambrella.com service with you if you are open to discussion? You'll get the functionality as explained with Symantec at the lower price point. A perfect blend of best of breed technologies to detect and manage phishing, spoof, attachments etc. Great support demo's and online training/remote assistance.
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