550 5.7.1 Message refused due to content violation: Heuristics.Phishing.Email.SpoofedDomain

Iww.Boston wrote...
I'm trying to share an event from Google Calendar to a mailing list. The Calendar account uses this account's email for login, and I use the calendar event's invite feature to enter the lists.riseup.net address. This worked for past events including one I just posted minutes before, but now I get this error in emails to the sending (i.e. this account's) email:

Message blocked
Your message to [redacted]@lists.riseup.net has been blocked. See technical details below for more information.
The response from the remote server was:
550 5.7.1 Message refused due to content violation: Heuristics.Phishing.Email.SpoofedDomain - contact https://support.riseup.net if this is in error
Upvote | 0
Iww.Boston replied...
I also just tried sending a message from the riseup email to the list, and that too failed with the same "Heuristics.Phishing.Email.SpoofedDomain" error.
Upvote | 0
Iww.Boston replied...
Also tried sending from another riseup email to the same effect.
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Iww.Boston replied...
Ok last try: I added a non-Riseup domain email to the list, sent the same message from that domain to the list, and got the same error response.
Upvote | 0
Iww.Boston replied...
Here's the message:
----

[Title redacted]
When
[redacted]
Where
https://meet.jit.si/[redacted]
Who
(Guest list has been hidden at organizer's request)

[Plain body text redacted]



Find the agenda here -> https://pad.riseup.net/p/[redacted]



Dial in here -> +x.xxx.xxx.xxxx,,xxxxxxxxxx#


https://calendar.google.com/event?action=TEMPLATE&tmeid=[redacted]&tmsrc=iww.boston%40riseup.net
Upvote | 0
Paroreomyza.flammea wee
Kaakaawahie replied...
Please put the full headers (feel free to redact personal info but keep as much as possible) at share.riseup.net and provide a link here.
Upvote | 0
Paroreomyza.flammea wee
Kaakaawahie replied...
This ticket is being closed due to inactivity.  Please respond and
reopen the ticket if you still desire assistance with this topic. 

In Solidarity, 

-riseup collective

PS: We need your help to continue our work – please consider donating to riseup – https://riseup.net/donate
Upvote | 0