On Mon, 3 Dec 2018 11:15:44 -0700 Grant Taylor wrote:
> I think a LONG time ago, likely before SpamAssassin was a thing, it > was valid to have multiple @ signs in an email address. This was a > method of routing messages through other servers. Think UUCP bang > path. I think, as the name suggests, that was multiple "bangs" (a bang being the character "!"), > I don't think the multiple @ signs have worked in a very long time. > So I see no reason not to add score based on multiple @ signs. Or if > there is a legitimate use for it, it should be extremely rare and the > false positive rate should be acceptable. I think an @ can be a part of a local-part, but it is really about usage. I wonder if there is a point to it? Is there a client that ends-up displaying something misleading?
