Titan DNS requirements are as follows:-
Remove all other MX records and add the following 2 MX records and 1 TXT record;
TYPE | Priority | Destination |
MX | 10 | mx0101.titan.email |
MX | 10 | mx0102.titan.email |
TYPE | DATA |
TXT | v=spf1 +a +mx +include:spf.myhost.ie ~all |