Two most common reasons for this issue are:
- The TXT record is entered incorrectly. Did you run the nslookup command from outside your network to see if it exists?
- Your Xeams is configured to use a DNS server that also has record for your domain but does not have the DKIM key. This typically happens when companies use an in-house DNS server internally but have their actual record on the Internet, such as GoDaddy.
If you don't mind pasting the host name of your TXT here, we can check it from our end to see if it is valid. You will have to put your selector along with your domain name.
