Hi all, TL;DR: Please upgrade to Synapse 0.18.6, especially if you are on 0.18.5 which is a bad release. TL;DR: Please upgrade to Synapse 0.18.7 – especially if you are on 0.18.5 or 0.18.6 which both have serious federation bugs. Synapse 0.18.5 contained a really nasty regression in the federation code which causes servers to echo transactions that … Continue reading Synapse 0.18.7 is out – Please upgrade, especially if on 0.18.5 or 0.18.6.