Is it possible the following error could cause emails to not be sent?
warning: numeric domain name in resource data of MX record for domain.com: xx.xxx.xxx.xxx
Our customer support department says there' been a huge spike in customers not receiving RMA emails. No code on the RMA site has changed at all, we haven't updated the production server. I'm showing about a 97% success rate on emails being sent from the server logs.
Any ideas on what I should look at to determine the cause?