Hamish Gough

The other problem with SPF is the limit of 10 DNS-querying lookups. This means you're limited in the number of providers that you can allow to send mail on your behalf (and some will "consume" more than 1 each).

One option is to try "flattening" your spf records, so instead of including zendesk's spf you just all all the ip4 records from it - this gets ugly as more providers are added.

Being able to use our own SMTP server (like a lot of other providers enable) would make life a lot easier. Is it that hard to do?