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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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Mail-in-a-Box
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
We still run multiple own mail servers for sending 100.000 transactional emails per month. For GDPR reasons and because we have existing contracts with our customers which name all our used IT suppliers, which we don't want to touch to add a new one. We started with iRedMail, now use mailu (fewer moving parts, IMHO).
We still run multiple own mail servers for sending 100.000 transactional emails per month. For GDPR reasons and because we have existing contracts with our customers which name all our used IT suppliers, which we don't want to touch to add a new one. We started with iRedMail, now use mailu (fewer moving parts, IMHO).
Incoming mail is simple enough, but SMTP server for outgoing is a potential nightmare. I ran my own SMTP for many years without an issue, then one day without warning I had a lot of outgoing email rejected as spam. An entire block of IP addresses (that happened to include my mail server) appeared on a blacklist. It's just too much hassle managing your way out of this. I switched to using sendgrid, let them deal with the aggravation. I now maintain only incoming email, which I prefer for reasons of privacy and control. This set up is basically problem free (barring issues with users keeping Gb of data in emails, etc.)
I've been operating mail servers in different capacities for over 20 years. At the moment I use mailinabox, which is an all-in-one solution (DNS/email/groupware) that will automate away all the problems the other people mentioned. If it wasn't for MIAB I may have given up on self-hosting as the integration is a real PITA if you have to do it yourself, as already mentioned by other posters. MIAB uses an open source stack (postfix, dovecot, nextcloud, nginx, postgrey, ...) which I had already been familiar with so even if I had to adjust something, I would know how, but I don't even do that.