Users' questions

How do I format an SPF record?

by Rhyley Bryan

How do I format an SPF record?

Follow these five simple steps.

  1. Step 1: Gather IP addresses that are used to send email. The first step to implement SPF is to identify which mail servers you use to send email from your domain.
  2. Step 2: Make a list of your sending domains.
  3. Step 3: Create your SPF record.
  4. Step 4: Publish your SPF to DNS.
  5. Step 5: Test!|

How do I read an SPF record?

Answer

  1. Open Command prompt (Start > Run > cmd)
  2. Type “nslookup -type=txt” a space, and then the domain/host name.
  3. If an SPF record exists, the result would be similar to:
  4. If there are no results or if there is no “v=spf1” property, then there is a problem retrieving the record for the domain, or one does not exist.

What is SPF record syntax?

The SPF record for domain replaces the current record. The macro-expanded domain is also substituted for the current domain in those lookups. If a ‘redirect’ modifier is used, the SPF record should not also include the ‘all’ mechanism. Suppose example.com’s SPF record was “v=spf1 a ~all”.

What is an SPF record in DNS?

An SPF record or SPF TXT record is a record that is part of your domain’s DNS — similar to a DMARC record. It contains a list of all the IP addresses that are permitted to send email on behalf of your domain.

What is SPF hard fail?

SPF fail, also known as SPF hardfail, is an explicit statement that the client is not authorized to use the domain in the given identity. SPF fail is definitively interpreted in DMARC as fail, regardless of the DMARC package you are using.

What does V spf1 all mean?

Description. “v=spf1 mx -all” Allows the domain’s MX hosts to send mail for the domain, and prohibits all other hosts.

How do I know if my SPF record is correct?

How to validate your SPF record

  1. Go to the SPF Checker. Go to the SPF checker of DMARC Analyzer.
  2. Validate your SPF record. Check the ‘I am not a robot’ checkmark and click ‘validate DNS’

What does V spf1 mean?

v=spf1 is the version. a : All the A records for domain are tested. If the client IP is found among them, this mechanism matches. mx : All the A records for all the MX records for domain are tested in order of MX priority.

Is Dkim better than SPF?

In a nutshell, SPF allows email senders to define which IP addresses are allowed to send mail for a particular domain. DKIM on the other hand, provides an encryption key and digital signature that verifies that an email message was not forged or altered.

Is SPF a TXT record?

What are SPF records? An SPF record is a TXT record that is part of a domain’s DNS (Domain Name Service). An SPF record lists all authorized hostnames / IP addresses that are permitted to send email on behalf of your domain.

What happens if SPF fails?

The receiving mail server grabs the Return-Path domain and checks out the domain’s DNS records for example.com, looking for the SPF record. ✅ If the IP addresses don’t match, that would cause SPF to fail. This would likely make the receiving server suspicious and they might reject the mail.

What causes SPF soft fail?

PermError means the published SPF record could not be verified by the mailbox provider. PermErrors are usually caused by a syntax or format error in the SPF record. Ensure your SPF record is set up correctly and doesn’t have any extra spaces or unrecognizable characters in the DNS TXT record.

Can a SPF record be published as a TXT record?

It is best practice to publish your SPF record via DNS as both a SPF record and and TXT record. When you do this, they MUST match exactly in accordance with RFC 4408 section 3.1.1. Publishing an SPF record in your “example.com” DNS records tells the world which server IP addresses are authorized to send emails from “@example.com” email addresses.

What does SPF stand for in Domain Name Service?

What are SPF records? An SPF record is a TXT record that is part of a domain’s DNS (Domain Name Service). An SPF record lists all authorized hostnames / IP addresses that are permitted to send email on behalf of your domain.

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How to create an SPF TXT record in DMARC?

For example: v=spf1 ip4:34.243.61.237 ip6:2a05:d018:e3:8c00:bb71:dea8:8b83:851e Next, you can include an include tag for every third-party organization that is used to send email on your behalf e.g. include:thirdpartydomain.com.