Exchange TXT MX SPF Records

Hello,

thank u so much for your explanation, please let

-I have full access at ISP DNS records creation and modification

-no zones created at ISP nor GTM itsself

-what I did :

1-delete A records from ISP side

2-create NS record at ISP side

2-create same A records at GTM

no I plan to migrate MX and TXT resource records from ISP to GTM but when I use same steps to create VS>POOL>WideIP I cant configure the data itself at MX records

then I found a document to create it using zone runner but by using DNS  ››  Zones : ZoneRunner : Resource Record List then create and choose type MX

but unfortunately I couldn't complete the steps as MX should return data like xxxxxx.mail.protection.outlook.com.