dirwiz

A mail/spam filter to flag emails whose sender's domain is less than a year old.

I imagine everyone's answer will begin with "It depends". I can only give you feedback on my workflow & setup.

My dev hardware is an external SSD (USB3) running Debian. I virtualized my dev environment using qemu/kvm.

I have several old laptops with no hard drives stationed at various offices. I just plug in, boot from the SSD and off to the races.

If I need a laptop while traveling, I just pull from the old laptops pile and remove it's hard drive. Good to go.

I do have minimum specs for the hardware: 1TB Samsung SSD (be sure the cable supports TRIM!) 16GB Memory (Virtualization) nVidia graphics (hard to find those non-hybrid types) decent screen size.

In addition to normal backups of the host & VM, I do a weekly image of the VM. This helps greatly against damage/loss of the SSD.

Hope this helps

I suppose I fall into the artisanal category (postfix,dovecot,spamassassin,roundcube etc). In our case everyone runs mobile/desktop IMAP clients, web mail at least seems to be a "when all else fails" backup plan for quick emails.

I do have a specific beef with all the consolidated email providers. If one of them determines your SMTP server to be spam (false-positive), ALL of their clients now reject your email with little recourse for the admin. Just had this happen with a solution that rhymes with 365. Even their clients were clueless as to how to resolve it.