Inbound Spam filtering with Proxmox Mail Gateway
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Self-Hosted
Best Splunk Alternative – Gravwell
If your using Splunk or need a way to aggregate logs and do searches. Gravwell says they provide everything out of the box, with much better features and only 14 GB per day limit compared to Splunk Free.
Best Free Self Hosted Email Server with ActiveSync
Running email sever is not the easiest thing to do, as it involves many components like SMTP, DNS, Email Client, SPF, DKIM, deliverability issues but sometimes its nice as you can purchase a domain name or leverage the domain you already have and create whatever email address you want.
Its also nice to have complete privacy over your emails, as leveraging free email servers they have full access to view all your emails.
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Zimbra & ActiveSync
There are other solutions out there Mail-in-a-Box, mailcow, iRedMail, Modoboa and Kopano. However I have been using Zimbra Open Source Edition for a few years now and enjoy the web interface for administration of the system, it makes it easy to add
Email server Autoconfiguration with Zimbra and Z-Push
You have your email server but when you setup new clients or users, you find it tedious to remember all the settings. Or if you want others to use your email server you find it difficult for those users due
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