I have a VPS hosted with 1&1 which also provides mailboxes that we use for day to day e-mailing. Our domain is registered with 123reg and the name servers point to 1&1 .
To email our 10k+ mailing list I use Amazon SES and I wish to validate against our domain . Now I cant verify my email with amazon as 1&1 doesn't support TXT/SPF however 123reg does.
My question is ( and my apologies for my lack of DNS knowledge ) can change the name servers back to 123reg and then create A/CNAME/MX records to point to 1and1 for my mail and webhosting ?