mail1.isfpegypt.com has no MX records.
Question and response
Question
dig mail1.isfpegypt.com. MX
Answer
The response has no answer records.
Authority
isfpegypt.com. 3600 SOA DNS101.REGISTER.com. root.REGISTER.com. 126021510 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0