[exim] Suddenly getting "R=smarthost T=remote_smtp defer (-5…

Hi, folks,

     I've suddenly started getting errors like "R=smarthost T=remote_smtp
defer (-54) DT=0s: retry time not reached for any host for" in our ingress
node. I haven't changed anything on it recently other than unratelimiting a
specific node; on our egress node, I've added
smtp_accept_queue_per_connection = 30.

     I'm puzzled why this would suddenly start appearing, and delaying our
email. The messages being deferrer appear perfectly normal.

Thanks,

     John A

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