Ask HN: where do you host your most critical email addresses?
We turn off spam filtering on that address, because we absolutely, positively must ensure any email sent there makes it to our helpdesk. Any filtering/re-routing we do is done within the helpdesk system.
After our first round of evaluations, we chose Rackspace, and initially it seemed good... near-instant delivery and forwarding, quick support, modest pricing.
But during live usage, after auditing our "kept copy" archives with what got forwarded to our helpdesk we found that Rackspace does NOT reliably forward all email. (Even with spam filtering 'off', they still scan everything and if their filter says it's spam they do NOT forward it to your helpdesk. Worse, Rackspace also fails to mention the critical facts that 'off is not off' and 'forward only happens sometimes' on ANY of the configuration screens.)
Does anyone have a recommendation for a hosted email system that is reliable, responsive, and has the ability to ensure everything does in fact get forwarded properly?