Check mail spf

To check the SPF (Sender Policy Framework) record for a domain, you can use an online tool or a command-line utility. Here are a few options:

Online Tools:

1. SPF Checker by Kitterman: This is a popular online tool that allows you to enter a domain name and checks its SPF record.
2. SPF Record Checker by MX Toolbox: This tool also allows you to enter a domain name and checks its SPF record.
3. SPF Checker by DNSChecker: This tool checks the SPF record for a domain and also provides information on other DNS records.

Command-Line Utilities:

1. dig (Domain Information Groper): This is a command-line utility that comes with most Linux and macOS systems. You can use it to query the DNS server for a domain's SPF record.
   • Example: dig +short txt <domain_name>. spf
2. nslookup: This is another command-line utility that comes with most Windows and macOS systems. You can use it to query the DNS server for a domain's SPF record.
   • Example: nslookup -type=txt <domain_name>. spf

Example Output:

When you check the SPF record for a domain using one of these tools or utilities, you should see output that looks something like this:

v=spf1 a mx ip4:192.0.2.1 include:_spf.google.com ~all

This output shows the SPF record for the domain, which includes:

• v=spf1: The version of the SPF record.
• a: The IP address of the domain's A record.
• mx: The IP address of the domain's MX record.
• ip4:192.0.2.1: An IP address that is authorized to send mail on behalf of the domain.
• include:_spf.google.com: An inclusion of another SPF record, in this case, the SPF record for Google.
• ~all: A directive that specifies the default policy for unauthenticated senders.

By checking the SPF record for a domain, you can verify that the domain's mail servers are authorized to send mail on behalf of the domain.