Large messages now have “X-Spam-known-sender” header added

After a recent upgrade to our email delivery system, there was a bug where large messages (>500k) would never have the “X-Spam-known-sender” header added, even if the From address of the email was a known sender. This was affecting a small number of users who use “White list only” spam protection level and were receiving emails with large attachments. This has now been fixed.

Posted in Technical. Comments Off

Get every new post delivered to your Inbox.

Join 6,379 other followers

%d bloggers like this: