Here is the message from my ISP...who had no explanation of its meaning unfortunately.
Connected to 126.96.36.199 but sender was rejected.
Remote host said: 501 5.7.1 <firstname.lastname@example.org>... Sender refused by the DNSBL - AHRBL01: Exceeded invalid user delivery threshold, ID=2507
The message came almost immediately after I clicked "send." for my outgoing email. My email program is Eudora. I re-sent it; same result.
My computer is working just fine re sending and receiving other emails and I have no trouble accessing the net.
MyVisual Route program tells me that connections past Hop 6 are causing packets to be dropped and that connections to HPPT Port 80 are being rejected. This has been the case since Noon.
Is a computer down somewhere, do you suppose? And what specifically does
"Exceeded invalid user delivery threshold" mean?