For maximum email delivery rates and better branding, it is important to add any domain names (that you send emails from) to the Settings > Sender Domains page. Adding a sender domain means that SPF and DKIM are automatically handled by us. If you're unsure what those acronyms are, you can rest assured that you won't need to learn any more about them.
If you don't set up a sender domain, SMTP2GO signs all emails with our own DKIM signature. This means that some recipients will see emails as being delivered "via smtpcorp.com" or "via smtp2go.com".
To set up a Sender Domain, follow the steps below:
From the left-hand menu, make your way to the 'Settings > Sender Domains' page in your SMTP2GO control panel.
Enter your domain name in the textbox and click 'Add Domain'. For example, if you send your emails from firstname.lastname@example.org then you would enter exampledomain.com.
Step Two - Login to your DNS provider:
Login to the DNS administration of your domain name with your DNS provider. If you are unsure where your DNS is hosted, check on the Sender Domains page where you'll see Your DNS provider is...
Step Three - DNS records setup:
Once you are logged into your DNS provider from step two, you're ready to create the CNAME records that are required. You do this by creating DNS records of the type CNAME for your domain name. The Sender Domains page will let you know exactly what you need to enter.
We have setup guides for popular DNS providers, which can make this easier.
How do I know it is working?
As long as your domain is showing as 'Verified' on your Sender Domains page, it is setup and working correctly.
I’m seeing an error with my DNS settings when trying to add the record with an underscore (_). What can I do?
Some hosts do not support underscores (_) in DNS records, and adding this record can cause an error. The underscore is required and you’ll want to contact your host and see if they can manually add the record for you or if they disallow underscores entirely.