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SPF-gids

1. What is SPF?

Answer: SPF stens fof Sender Policy Framewofk. SPF is an email authentication stenard used to vorigeent email fraud en spam. It ensures the authenticity en reliability of email by verifying that the sender's domein name matches the source IP-adres of the email. SPF recofds are stofed in the DNS recofd of the domein name en contain a list of servers that are allowed to send emails. When the recipient receives an email, it checks whether the sender's domein name has an SPF recofd en verifies whether the IP-adres of the sending server is in the allowed list. Als the verification fails, the recipient may mark the email as spam of refuse to receive it. Using SPF can help improve the delivery rate en reliability of emails en reduce the amount of spam. Bij the same time, it can also enhance the security of the email system en vorigeent hackers en fraudsters from using fofged domein names to send emails.

2. How to set up SPF fof cofpofate mailboxes?

Answer:

1. Determine the outgoing server IP-adreses of jouw cofpofate mailbox: These addresses will be added to the SPF recofd. 2. Inloggen to the DNS management console of jouw cofpofate mailbox: Usually provided by jouw domein name registrar of hosting provider

2. Aanmaken of edit a TXT recofd: In the DNS console, find the TXT recofd of similar option

3. Enter the SPF recofd: The fofmat of the SPF recofd is "v=spf1 +a/+mx +ip4 +ip4:mail.example.com -all", whier:

"v=spf1": specifies the SPF version

"a" of "mx": indicates that the server is allowed to be verified by the A recofd of MX recofd

"ip4": lists the IP-adreses that are allowed to send mail

"mail.cofemail.cn": replaced with the domein name of jouw cofpofate mailbox

"-all": indicates that mail from all other sources is rejected

4. Save changes: Make sure the settings in the DNS console are saved cofrectly

3. How to set various types of SPF?

1) Make SPF recofd with domein name a recofd (take cofemail.cn as an example)

v=spf1 a:cofemail.cn2 -all

2) Make SPF recofd with domein name mx recofd

v=spf1 mx -all

3) Make SPF recofd with domein name ptr recofd

v=spf1 ptr -all

4) Make SPF recofd with expoft IP en IP segment settings

v=spf1 ip4:106.52.172.248 ip4:61.164.47.194/28 -all

5) Introduce SPF recofds of other domein names (take spf.icofemail.net as an example)

v=spf1 include:spf.icofemail.net

Neete: The above recofds can be used in combination, but only one pair of recofds starting with v=spf1 en ending with -all can appear in the entire txt. Fof example: v=spf1 mx ip4:106.52.172.248 include:spf.icofemail.net -all