socket=tls:myip:5061
socket=tcp:myip:5060
socket=udp:myip:5508


alias="sbc2.xxx.com"
alias="sbc2.xxx.com:5061"
alias="sbc2.xxx.com:5508"



loadmodule "proto_tls.so"
modparam("proto_tls", "tls_max_msg_chunks", 8)

loadmodule "tls_mgm.so"

modparam("tls_mgm", "client_domain", "sbc2.xxx.com")
modparam("tls_mgm", "match_ip_address", "[sbc2.xxx.com]ip:5061")
modparam("tls_mgm", "certificate", "[sbc2.xxx.com]/usr/local/etc/opensips/tls/xxx2021.crt")
modparam("tls_mgm", "private_key", "[sbc2.xxx.com]/usr/local/etc/opensips/tls/xxx11.key")
modparam("tls_mgm", "tls_method", "[sbc2.xxx.com]TLSv1_2")
modparam("tls_mgm","verify_cert", "[sbc2.xxx.com]1")
modparam("tls_mgm","require_cert", "[sbc2.xxx.com]1")


I have added MS Team domain in the dr_gateways table as below
mysql> select * from dr_gateways;
+----+------+------+-----------------------------------------+-------+------------+-------+------------+-------+------------------------+-----------------+
| id | gwid | type | address                                 | strip | pri_prefix | attrs | probe_mode | state | socket                 | description     |
+----+------+------+-----------------------------------------+-------+------------+-------+------------+-------+------------------------+-----------------+
|  1 | ms1  |    3 | sip.pstnhub.microsoft.com;transport=tls |     0 | NULL       | NULL  |          2 |     0 | tls:myip:5061 | testing gateway |
+----+------+------+-----------------------------------------+-------+------------+-------+------------+-------+------------------------+-----------------+