Hello,
My domain recently expired and I renewed it, but now I am receiving the following 553 error when attempting to send email through my Zoho address:
"553 Relaying disallowed. Invalid Domain"
This is using the "Send mail as" feature in gmail to send from my Zoho account. From looking at other similar issues, I believe I need to replace the TXT verification record?
Thank you for any help with this issue.