I have a service (statusme.com) where I let people know (for example) that their kid's soccer games are cancelled because of bad weather. We send out emails to the people who have registered.
I have a second server as a backup, (vps.statusme.com) and I've set up the application to send some of the email through the second server. But I'm getting complaints from various recipient SMTP servers that the email is considered spam. So I did some investigating, and it appears that they think my reverse DNS record isn't correct.
But when I look at it via various rDNS websites and instructions I found elsewhere on ServerFault, everything looks correct:
jb$ host -t a vps.statusme.com 18.104.22.168 Using domain server: Name: 22.214.171.124 Address: 126.96.36.199#53 Aliases: vps.statusme.com has address 188.8.131.52 jb$ host -t ptr 246.8.84.66.in-addr.arpa 184.108.40.206 Using domain server: Name: 220.127.116.11 Address: 18.104.22.168#53 Aliases: 246.8.84.66.in-addr.arpa domain name pointer vps.statusme.com.
I'm confused about what I'm doing wrong. Thanks for any suggestions.