On Fri, Jan 17, 2020 at 09:40 AM, Bryan Jones wrote:
I tracked groups.io emails coming into my organization, and they all came from a single IP that, when I perform my own geo lookup, is identified as coming from California.?However when their IT group researched the blocked emails, they?determined that Mimecast was identifying the source IP for the groups.io emails as originating from Hong Kong.??
Yes, io is a top-level domain for the "British Indian Ocean Territory," which may at one time have included Hong Kong. If a receiving provider uses very crude geographic filtering (tld instead of IP address), it could be a problem, and the subscriber needs to find a provider that doesn't.
Personally, I consider groups.io to be a global community...no one is a "foreigner." In that context the filtering of messages on such a basis seems rather absurd.
Regards,
Bruce
Bruce