I am trying to send email from Server using SMTP in python. I am getting error ‘We do not authorize the use of this system to transport unsolicited,\nand/or bulk e-mail.’ while sending email. I have added the DNS record for ‘mail’.
Cloudflare does not handle mail. You need to unproxy all mail related DNS records (set them to , not ). Any issues you are having then aren’t related to Cloudflare, as long as you have the correct DNS records added.