mail.dns2.swiftrfp.net has no MX records.
Question and response
Question
dig mail.dns2.swiftrfp.net. MX
Answer
The response has no answer records.
Authority
dns2.swiftrfp.net. 86400 SOA dns2.swiftrfp.net. admin.swiftrfp.net. 2022050301 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0