Hi, trying to pin down why so much email isn't making it recently. We see issues with various big ISPs. The most obvious is none of the three UK ISPs I have ready access to can connect to port 25 on relay.verizon.net. (MX for all the verizon.net email addresses). We can ping it (I'm sure it isn't singular?), but we have no more luck delivering email than contacting verizon technical staff, logs suggests we are in day 3 of this. I'm now listening to hold music at International rates - ouch. Have a support call with GXN open on connectivity to hotmail, which seems to vary with UK ISP, but is in general pretty poor from all of them. In general I'd say off topic in Nanog, but there comes a point where you start wondering if the routing is messed up. Am I alone before posting more details. Simon