How Many SPF Records Can You Have?

Can you have multiple txt SPF records?

Duplicate SPF TXT records Another commonly violated aspect of SPF is that a domain may only have a single SPF record.

That means you can only have a single DNS TXT record that begins with “v=spf1”.

Having multiple records by definition of the RFCs should result in a permanent error..

How do I check my SPF record?

You can manually check the Sender Policy Framework (SPF) record for a domain by using nslookup as follows:Open Command prompt (Start > Run > cmd)Type “nslookup -type=txt” a space, and then the domain/host name. … If an SPF record exists, the result would be similar to:More items…•

How many TXT records can you have?

Multiple TXT DNS records are perfectly acceptable. In fact, I think one of my domains has about 6 of them. If you append it to the end of another TXT record, it is likely to stop that one performing it’s correct function.

What does SPF record stand for?

Sender Policy FrameworkAn SPF (Sender Policy Framework) record is a type of TXT record in your DNS zone file. SPF records help identify which mail servers are permitted to send email on behalf of your domain. Adding an SPF record can help detect and prevent spammers from sending email messages with forged From addresses on your domain.

Can you have multiple TXT DNS records?

Multiple TXT records are completely legal per the DNS standards. Multiple TXT records implementing a specific standard can potentially be illegal, but only within the scope of that one standard.

How long does it take for SPF records to propagate?

48 hoursIt can take up to 48 hours for SPF to begin protecting your domain from spoofing and ensuring mail delivery.

What is a domain TXT record?

TXT records are a type of Domain Name System (DNS) record that contains text information for sources outside of your domain. You add these records to your domain settings. You can use TXT records for various purposes. Google uses them to verify domain ownership and to ensure email security.

What is DNS dmarc record?

DMARC, which stands for Domain-based Message Authentication, Reporting, and Conformance, is a DNS TXT Record that can be published for a domain to control what happens if a message fails authentication (i.e. the recipient server can’t verify that the message’s sender is who they say they are).

Who owns the IP address?

IP Whois Lookup Tool provides free IP Lookup Service to check who owns an IP Address. Just enter an IP and Lookup IP Address to find which organization or individual owns the particular IP Address.

What happens if you have 2 SPF records?

Multiple SPF Records If your domain contains more than one entry, recipient servers will decline both. As a result, it will cause your emails to fail an SPF check. There are two ways of tackling this issue. You should remove the SPF entries in the domain’s DNS, that are not in use anymore.

How do I find my DNS TXT record?

Go to the DNS records stored with your domain host to edit the verification record. In the Hostname (also called Host, Name, or Host record) field, enter your domain name, which looks like domainname.com. Save the record and wait up to 72 hours to see if your domain is verified by Google.

How long can a TXT record be?

Strings in SPF and TXT records should be no longer than 255 characters. However to get around this limitation, per RFC 4408 a TXT or SPF record is allowed to contain multiple strings, which should be concatenated together by the reading application.

How do I lower my SPF lookup?

The number of SPF lookups can be reduced by:Cleaning up your record: Sometimes there are duplicate mechanisms in the record (for instance an MX record to Google Apps and an include from Google SPF)Use subdomains for specific email flows. … Check if you’re using the correct included domains. … Use SPF macros (advanced)

Is an SPF record necessary?

SPF records are used to prevent spammers from spoofing your domain name. Recipient servers can use the SPF record you publish in DNS to determine whether an email that they have received has come from an authorized server or not. … Over recent years SPF has gone from a “nice to have” to a “must have”.

How many includes in SPF record?

TenMany people may not realize it, but the Sender Policy Framework (SPF) specification has a limit on the number of DNS lookups (10) required to fully resolve an SPF record. One typically quickly exceeds this limit through the reckless use of the include modifier.

How do I combine SPF records?

Adding the new SPF record In the DNS settings, first remove the current SPF record. Once that is done, add a new TXT record, type @ in the Name field, and then paste the merged SPF record in the data field. Then save the new record.

Does SPF include subdomains?

You need to have separate SPF records for each subdomain you wish to send mail from. … The ‘include:’ directive for SPF may be used to provide all subdomains with the same entries. For example, on the SPF record for subdomain mailfrom.example.com enter ‘include:example.com’.

What is SPF lookup?

SPF Record Check – Lookup SPF Records Sender Policy Framework (SPF) records allow domain owners to publish a list of IP addresses or subnets that are authorized to send email on their behalf. The goal is to reduce the amount of spam and fraud by making it much harder for malicious senders to disguise their identity.

How do you check if my IP is blacklisted?

If your IP address has been blacklisted and you want to investigate, you’ll need to visit the blacklist’s website and do a lookup on your IP address. Most blacklist databases will provide general listing reasons, but don’t list specific email addresses tied to blacklisted IP addresses.