I don't know if this is the cause, but lots of mailing lists have been forced to rewrite some addresses address. It seems that Google and perhaps Microsoft and other big guys have decided that forwarded mail is suspect. DMARC or DKIM or SPF or something like it gets broken by forwarding.
I've not read this but it might be relevent: <https://sites.google.com/site/oauthgoog/mlistsdkim> See this incomplete description of the gtalug mailing list reaction: <https://gtalug.org/pipermail/talk/2016-June/003326.html> <https://gtalug.org/pipermail/talk/2017-March/004659.html> _______________________________________________ Swan-dev mailing list [email protected] https://lists.libreswan.org/mailman/listinfo/swan-dev
