Thank you for you interest in contacting us. We want to let you know, that due to bad DMARC DNS record settings on the Yahoo and AOL nameservers, ALL Yahoo and AOL email will either be delayed, sent to our SPAM boxes, or most commonly, permanently fail. This will happen until they update the settings to a valid setting. If it takes a bit for us to get back to you, please know it is not intentional.
There is nothing that we can do to fix it, due to it being an error on the Yahoo/AOL nameserver records. Our email servers follow industry standard best practices. Google has a great write-up on what and why your email may be rejected by the email servers DMRTexas.net and many other email systems use here.