Can I have a TXT or SPF record longer than 255 characters?
You can add multiple strings of 255 characters in a single TXT record. The maximum length of a value in a TXT record is 4,000 characters.
Do DNS TXT records need quotes?
The content of a DNS TXT type record is often displayed with double quotes, but those quotes are not (or should not be) part of the actual DNS record content. The quotes are there for display purposes only.
Can DNS have 2 TXT records?
Answer. Yes. If you have multiple Zendesk accounts, you can add individual TXT records to your DNS server for each account that uses the same email domain. Add a TXT record to your DNS server for each account that you manage.
How big can a DNS TXT record be?
Most TXT records can have up to 255 characters. For TXT records that include more than 255 characters, DNS adds multiple strings together in a single record. If you’re using a 2048-bit DKIM key, you can’t enter it as a single text string in a DNS record with a 255-character limit.
How many characters can a SPF record be?
Sender Policy Framework (SPF) records have a 255 character string limit in Domain Name System (DNS). If you have an SPF record with a string longer than 255 characters, you will fail the SPF authentication check. Remove any mechanisms from your SPF record that resolve to the same domain.
Is there a limit on SPF records?
Sender Policy Framework (SPF) specification comes with a limit of only 10 DNS SPF lookups per SPF record. If you are a domain owner and planning to add an SPF record to the DNS database, ensure that this limit is not exceeded, or else your SPF record check will fail.
Can you have multiple SPF records for a domain?
Don’t use multiple SPF records! A domain name MUST NOT have multiple records that would cause an authorization check to select more than one record. The rule of thumb: multiple SPF records will fail the SPF authentication.
Why SPF record is not recommended?
The answer is no. SPF alone cannot prevent your brand from being impersonated. For optimal protection against direct-domain spoofing, phishing attacks, and BEC, you need to configure DKIM and DMARC for your domain. Furthermore, SPF has a limit of 10 DNS lookups.
Can I add 2 SPF records?
Can You Have More than 1 SPF Record? No, you can’t have more than 1 SPF record. If you do have two separate SPF TXT record entries, your emails will fail SPF authentication and return a PermError. If you have multiple SPF records, the simple fix is to merge these entries into a single record.
Can I have multiple SPF records in DNS?
The answer is no: a domain MUST NOT have multiple SPF records, otherwise SPF fails with PermError. An SPF record is a TXT record in the DNS starting exactly with “v=spf1”, followed by an array of mechanisms and/or modifiers.
How long can a DNS name be?
Domain names (including the names of domains, hosted zones, and records) consist of a series of labels separated by dots. Each label can be up to 63 bytes long. The total length of a domain name cannot exceed 255 bytes, including the dots.