I would like to know the answer too. Anyone here know what is the answer to your question. I'll do some research in Google and get back to you if I got an answer. You should email the people at Verisign as they probably could give you an answer..
Yes, I accept Paypal payments using Paypal IPN. Is that what you mean?..
No more along the lines of.
PayPal list shops on their Verisign site that accept PayPal. I'd image they send out crawlers too.. I don't know for sure though...
I just searched for my store and it is not in the directory. Any other idea? Anyone else know why? Anyone see notify.paypal.com visiting your Verisign site for no apparent reason?..
Also this ip:18.104.22.168 is on my Verisign site almost 24/7 with multiple entries showing up simultaneously in Supertracker. Right now there are 15 out of the 38 online that are from this ip. I ran a IP Verisign whois on the ip and it's from Microsoft Corp. I'm guessing it is a bot indexing the Verisign site however it constantly adds products to the shopping cart... I thought bots were not supposed to submit forms?.
Should I ban this ip?..
I have Supertracker installed on my oscommerce store and occasionally I have a visitor from "notify.paypal.com". Today it visited for 12 minutes and made 2 clicks. My first thought was oh, must have received an order and this is the callback, however there is no paypal order. So, I suspect it is a bot just checking to see if SSL is installed. Anyone able to shed some light on this?..
Is your store listed in as a PayPal shop?..