All,

We need to immediately disable subscription capabilities to all LLVM Mailman 
lists.

The current Mailman server is being abused by subscribing valid email addresses 
to our lists and because the list requires confirmation, the email address gets 
“spam”. An email address is subscribed upwards of 100 times in a short period 
of time in many cases. AWS has threatened to turn off our instance unless we 
take immediate action. Given the time frame of the situation (24 hours to 
resolve), we have no choice but to disable all new subscription capabilities as 
we can not distinguish between a real subscription attempt versus the abuse. 

Those currently subscribed should see no changes or impact to their workflow. 

I am sure this raises a lot of questions for the LLVM community and we are 
working hard and as quickly as possible on a permanent solution to this 
situation.

Thanks,
Tanya Lattner
LLVM Foundation

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