Yahoo servers continue to refuse many of our emails and they seem to also handle some routing for other providers such as aol.com, aim.com, and verizon.net.
We are attempting to resolve this as quickly as possible, following best practices, limiting outgoing mail on this server, and requesting reviews but as of yet we have not been able to get a satisfactory resolution from Yahoo.
After further investigation of this issue, it appears that emails to @yahoo email address's are being blocked on the Yahoo side because our IP went from no emails to thousands of emails all at once. We are currently working on escalating the issue both through our provider and through Yahoo. We will continue to update this thread as we have more information.
We apologize for these emails ending up in spam/junk folders, it seems that our new ISP has not yet implemented delegation for our reverse lookups so many mail servers will proactively decide that our messages are junk. We are currently dealing with getting this fixed ASAP. While this should be fixed today and future emails will not likely be flagged people may have to check their junk folders for messages sent from us over the past 2 days.
I'm sorry you're experiencing issues with our site, however as Anguish stated our cert is currently valid and we haven't done anything that would have caused it to present wrong. Since the problem is not on our end it likely is something between our servers and your machine such as a proxy, but its sadly not something we can help diagnose beyond confirming that our certificate is indeed currently valid.