Riseup has been spam blacklisted by SORBS and the Univ of Washington is blocking emails from Riseup servers. This is my third attempt to open a ticket.
19 June 2017 - Riseup IP 198.252.153.8 is still blacklisted by SORBS.
FYI, this ticket was inadvertently cross-posted to [en] Email.

Hi,
We've been working with SORBS to get the lists.riseup.net servers delisted. Half of the IPs we use have been delisted, but there are still a few (including .8) are still listed and we are waiting for a response from SORBS. We can setup something to route UW mail via the ones that aren't listed.
We've been working with SORBS to get the lists.riseup.net servers delisted. Half of the IPs we use have been delisted, but there are still a few (including .8) are still listed and we are waiting for a response from SORBS. We can setup something to route UW mail via the ones that aren't listed.
Thanks for the update, Roadrunner. FYI, I checked again today and SORBS is still blacklisting 198.252.153.8 .

Finally today SORBS delisted the rest of our MX servers. It might take up to a day for cached records to expire, but hopefully everything will be working by tomorrow.
Please let us know if you see problems.
Thanks
Please let us know if you see problems.
Thanks
Thank, according to IPINDETAIL.COM, the Riseup IP is delisted now.