ContributionsMost RecentMost LikesSolutionsRe: what the heck is going on with email? Allan: On a call late last night with your Internet support team I learned that Cox has been implementing changes this week to clamp down on open relay and spam. The changes include a change in support away from unencrypted ports (POP 110, SMTP 25) to encrypted ones (POP 995, SMTP 587 or 465). I too use Eudora, but I'm reasonably sure it can be configured to accommodate any changes Cox has made, PROVIDED I can get sufficient information about them. 1) Is there a bulletin on this? (Preferably something more specific than https://www.cox.com/residential/support/pop-or-pop3-server-settings.html) 2) How do these changes affect relaying? For years I have sent outbound email from Outlook and Eudora clients using a non-Cox address based on a non-cox.net domain with no problem at all. Since yesterday, every time I try to send email or reply to one sent to my non-Cox address, I get error "550 5.1.1 relaying not allowed." I'm sure it's related to your changes this week. It is NOT a Eudora-specific error; it's coming back from the server. 3) Can you give guidance on how this week's changes affect both ports AND certificates? I had to re-install certificates a couple of days ago so that I could receive inbound email. Why is that necessary? After you've answered those questions (and I can send email again), you may take the rest of the day off. Sincerely, John