From: Suresh Ramasubramanian <suresh at hserus.net>
If you want outbound relay solely for yourregistration emails there are
sites like smtp.com and authsmtp.com that you mightlook at.
Thanks for the ref. I registered with smtp.com
They sent me something called SPF record -
---- SPF record: "v=spf1 include:_spf.smtp.com ?all" ----
In the DNS-manager
"Add record" -> "Select SPF" -> "Select 'an ISP or
other mail provider'" -> "Selected tab 'Outbound'" ->
"Entered the full text 'v=spf1 include:_spf.smtp.com ?all'"
and then saved, also saved the zone file.