Which SPF record should one use for a spam filter?
If you want to create an SPF record for your domain when using Openprovider platform you can use the following value.
"v=spf1 include:spf.antispamcloud.com -all"
If you are still using our older bundled solution, then you can use this SPF record:
"v=spf1 a:spf.spamexperts.registrar.eu -all"
It includes all our servers and will allow your users to not be flagged as spammers when sending emails.
For more information about the SPF record, please refer to this article.