mail.server.aderlo.cloud has no SRV records.
Question and response
Question
dig mail.server.aderlo.cloud. SRV
Answer
The response has no answer records.
Authority
server.aderlo.cloud. 2000 SOA ns1.aderlo.cloud. hostmaster.server.aderlo.cloud. 2025100200 2000 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0