Here's a strange tale that I find worrisome:
Earlier today I sent an email to a single recipient. A minute later I got back
an error message stating that the email could not be delivered to three of
the recipients. None of the addresses listed as being intended recipients
was known to me, one was at a domain with no IP address on record, one
was "Recipient address rejected" and the third message was "rejected as
spam by Content Filtering". There was fourth recipient address listed too
with no indication that the message had not been delivered to it, and with
a copy of the subject. That was the address of the single person to
whom I'd sent the original message along with the corresponding subject.
The intended recipient never got the message.
The sending ISP can find no record of the bogus addresses in their smtp server
logs.
The intended recipient's ISP can find no record of the email at all.
Neither ISP had any record of the error message having been generated.
Both ISPs are very concerned and have started further investigations.
Sending PC is running 13.1 (64) with all current patches except that the
sending email client is Thunderbird 17.08 (the newer versions do not properly
display a variety of calendars that I cannot do without).
Internet connection is through two firewalls and 3 routers, not impossible
to hack, but unlikely.
I only post this as a way of suggesting folks be aware that there might now be a
way for unscrupulous senders to "piggyback" recipients on to our emails. Sounds
pretty strange I know, but I can't offer much more than that. Perhaps someone
reading this is a whole lot brighter than I am and can offer a theory.
Earlier today I sent an email to a single recipient. A minute later I got back
an error message stating that the email could not be delivered to three of
the recipients. None of the addresses listed as being intended recipients
was known to me, one was at a domain with no IP address on record, one
was "Recipient address rejected" and the third message was "rejected as
spam by Content Filtering". There was fourth recipient address listed too
with no indication that the message had not been delivered to it, and with
a copy of the subject. That was the address of the single person to
whom I'd sent the original message along with the corresponding subject.
The intended recipient never got the message.
The sending ISP can find no record of the bogus addresses in their smtp server
logs.
The intended recipient's ISP can find no record of the email at all.
Neither ISP had any record of the error message having been generated.
Both ISPs are very concerned and have started further investigations.
Sending PC is running 13.1 (64) with all current patches except that the
sending email client is Thunderbird 17.08 (the newer versions do not properly
display a variety of calendars that I cannot do without).
Internet connection is through two firewalls and 3 routers, not impossible
to hack, but unlikely.
I only post this as a way of suggesting folks be aware that there might now be a
way for unscrupulous senders to "piggyback" recipients on to our emails. Sounds
pretty strange I know, but I can't offer much more than that. Perhaps someone
reading this is a whole lot brighter than I am and can offer a theory.