mail.wissal.dz has no MX records.
Question and response
Question
dig mail.wissal.dz. MX
Answer
The response has no answer records.
Authority
wissal.dz. 36000 SOA ns1.wissal.dz. dnsmaster.nic.dz. 2026030100 86400 1800 2592000 36000
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0