SSL error on Eudora and other old email clients
The SSL certificate that identifies gn.apc.org was replaced on 29 May. Unfortunately, some old software, notably Eudora, doesn't recognise the modern "root certificate". We recommend switching to an up-to-date email program, such as Mozilla Thunderbird, but if you're unable to do that then Eudora can be told to accept our new certificate manually. Here's how to do that.