In order to send email from Sign-Up.to, you must add an SPF record that identifies it as a source of approved email for your domains. If the receiving server successfully checks the SPF record, then the sending server is authenticated and the email is not flagged as spam.
Creating an SPF Record for Sign-Up.to
Here are the steps to set up SPF for Sign-Up.to :
Login to your DNS management console
Navigate to Tools & Settings > DNS Template
You need to edit the DNS TXT record related to SPF
An SPF TXT record for Sign-Up.to will have the following syntax:
mydomain.com TXT v=spf1 v=spf1 include:sign-up.to ~all
Publish this record in your DNS records section for your respective domain.
Note: If you don’t have an SPF record previously for your domain, simply publish the above-mentioned record to enable SPF for outgoing emails using Sign-Up.to. If you do have an existing SPF record in your DNS, you need to modify it to include Sign-Up.to, as shown below:
Previous SPF record: v=spf1 mx -all
Modified SPF record: v=spf1 mx include:sign-up.to ~all
Wait for 72 hours to allow your DNS to process the changes