Thanks!
That's cheering! I'll have a look at that filter.
The "To" field, listed in the mail headers, is not what the MTA uses to determine to whom to deliver the mail. The recipient is specified by the sender during the SMTP conversation between the two servers. So the sender puts one thing in the "To" field, but tells your ISP's server to deliver the mail to you, which it does. Anyone can put anything in the "To" header.
- freely confess to being ABSOLUTELY non-plussed by that!
Who knows? An ISP getting paid next-to-nothing is unlikely to be interested in setting up custom mail-handling for a customer.
- was thinking more about larger responsibilities!!
I doubt they'll listen.
- I'll stop