Thanks to Chris S and Jeremy H for the helpful replies.
Just to clarify - this is my own system, not a university system. I
signed up to exim-users with my university address because I wanted to
configure my own system with exim :-)
But I guess I could run another server on a different IPv6 address
(assuming that Google rate-limit individual addresses, rather than
address blocks as I would do!).
>> One of my users has her mail forwarded to gmail, and since gmail
>> (correctly) recognizes that lots of it is spam, it rate-limits me in
>> my attempts to send it
>
> A) be more careful about accepting this spam in the first place
Not really on. I don't want my system deciding what's spam. I do
greylisting, but everything else addressed to me (with occasional
sporadic spam-flood exceptions) comes to me for manual review, with
varying degrees of attention.
I do this because I'm one of those people who doesn't trust anybody's
mail system, not even mine.
My users (all two of them) think the same.
> B) get complicated with a redirect router early in the chain,
> conditioned on gmail being the target and, via an acl expansion
> returning the result of a ratelimt condition; redirecting
> to :defer:
Thanks, that sounds like the hint I was looking for.
--
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Scotland, with registration number SC005336.