...
In the manual below we use " exampledomain.nl " as our domain.
Step 1:
Generate an SPF record via http://www.spfwizard.net/:
It is important that you know from which servers / providers e-mail for your domain is being sent. This applies to both e-mails that you send from e-mail programs and e-mails sent from your website (eg from a form). If the SPF record is not set correctly (completely), it is possible that your e-mails will no longer arrive.
Note: If you also send e-mail on your phone via your mobile provider, you should also add that SMTP server, but because this is difficult to find out, we recommend only Authenticated SMTP (basic account is included for free with your hosting package).
Enter your domain name in the first field (below is that exampledomain.nl), and tick the same values as in the image below. It is important to set up our outgoing e-mail servers at Add any domains that mail deliver this domain: _spf.managedomain.nl.
Note on last option:
We always recommend using a softfail unless the domain is actively abused for spam ( Joe Job ) or when security of the domain plays a very important role. This is because SPF can disrupt email forwarding on the receiving end (something that you can not influence).
...
Set up the SPF record via the Control Panel at https://ac.managedomain.nl/(my.codeorange.co.th). After logging in, click on your domain name and choose Name Servers. Add a record now (blue button). Copy the newly created SPF record on openspf.org (at the top of the gray) in the Content field. Note that you only copy the piece between the quotes, so from "v = spf1 up to the quotes at the end, so that it looks like in the picture below.
...
การตั้งค่า SPF record ใน Control Panel ของท่านที่ https://ac.managedomain.nl/ (my.codeorange.co.th)
1. หลังจากทำการเข้าสู่ระบบแล้วให้เลือกโดเมนที่ท่านต้องการตั้งค่า
2. เลือก "Name Server"
3. เลือก "Add a record now"
4. ทำการคัดลอก SPF record ใน openspf.org ที่สีเทาทางด้านบนลงในช่อง *ข้อควรจำ ให้ท่านคัดลอกตั้งแต่ "v = spf1 ไปจนสุดข้อความตามภาพด้านล่าง ส่วนช่อง Name(prefix) ให้ทำการเว้นว่างไว้และเลือก "TXT" หลังจากนั้นให้ท่านคลิกที่ "Create"
...