On Wed, 29 Jan 2020, Mat Martineau wrote:
This reverts commit 74759e1693311a8d1441de836c4080c192374238.
mptcp(a)lists.01.org accepts messages from non-subscribers. There was an
invisible and unexpected server-wide rule limiting the number of
recipients for subscribers and non-subscribers alike, and that has now
been turned off for this list.
Apparently the "bypass other rules" setting doesn't bypass this particular
rule, as one of my own messages just got held up. I'll get it fixed.