VRTS emails to Gmail accounts are broken when sent from LIST@wikipedia.org. Emails from LIST@wikimedia.org are delivered successfully.
Example error is below, from https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=13243923#Article16159247
```
This is the mail system at host mx-out1001.wikimedia.org.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<[redacted]@gmail.com>: host
gmail-smtp-in.l.google.com[2607:f8b0:4004:c07::1a] said: 550-5.7.26 The
MAIL FROM domain [wikipedia.org] has an SPF record with a hard 550-5.7.26
fail policy (-all) but it fails to pass SPF checks with the ip: 550-5.7.26
[2620:0:861:1:208:80:154:5]. To best protect our users from spam and
550-5.7.26 phishing, the message has been blocked. For instructions on
setting 550-5.7.26 up authentication, go to 550 5.7.26
https://support.google.com/mail/answer/81126#authentication
d75a77b69052e-446514c8206si155271181cf.612 - gsmtp (in reply to end of DATA
command)
```