--- a/README.markdown Wed Oct 07 21:54:58 2020 -0400
+++ b/README.markdown Wed Oct 07 22:25:31 2020 -0400
@@ -1514,3 +1514,10 @@
utilities) but mostly just wrote it from scratch. It was a good exercise.
I feel a little rusty at Lisp though…
+Sending emails with `msmtp` from Fastmail suddenly broke with:
+
+ msmtp: TLS certificate verification failed: the certificate fingerprint does not match fastmail
+
+I guess Fastmail updated their certs. The fingerprints are at
+<https://www.fastmail.com/help/technical/certs.html>.
+