I also realised I hadn't made an spf record for our domain and some email notifications to Gmail had failed on occasions (due to number of subscribers on Gmail). Should be sorted now.
(Triggered when sending similar emails to many Gmail accounts at once and Gmail thinking it was spam). If we still get issues, I can look into other authentication methods they recommend.
awesome! maybe already on your list, but one thing that could do with tweaking is the email notifications - currently they're busy HTML messages with a huge banner image, rather than the previous text updates. Personally I find the new ones a bit harder to parse.
I had it forced so posts to "Support" were forced to be questions, however there is a issue with this on mobile - see https://github.com/NodeBB/nodebb-plugin-question-and-answer/issues/42
so have disabled forcing it currently until this is resolved.
The configuration change has fixed the caching issue that happened when people edited posts and others could not see the edits.
For those interested in what the problem was - see https://github.com/NodeBB/NodeBB/issues/5123
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