|visits||member for||4 years, 10 months|
|seen||Apr 8 at 14:49|
How to format and where to put the SPF TXT record?
The 'a' means all servers in your A records and the 'mx' means all servers in your MX records. It's basically saying those servers are also valid mailers, invaluable if you're running your own app servers that send email too.