Use the command prompt

[subornaakter20]

If you are using Windows, you can check this using the built-in system tool "Command Prompt."

1. Start "Command Prompt" from the Windows start menu.

2. Enter the following command:
"nslookup -q=txt domain name"
Example: nslookup -q=txt arara.com

The part starting with "v=spf" is the SPF record.







How to set up an SPF record
The SPF record must be set on the DNS server that medical practice email list manages the sender address. If you manage your DNS server in-house, check with your company's server administrator. If you outsource management to a server management company, check with the server management company to see if it is possible to set an SPF record.

The method for setting the SPF record differs depending on the DNS server you are using. You may also set it yourself from the management screen of the server you have contracted with. The following is an example.



Sakura Internet
's Sakura rental servers support SPF records, and can be set up from the management screen under "Contract Information" > "Confirm Contract Domain" > "Domain Menu."

For details on how to set it up, please see the following article:


Onamae.com
Onamae.com can be set up from the admin screen under "Domain Settings" > "Name Server Settings" > "Use DNS Record Settings".

For details on how to set up, please see the following article.


After logging in to the XSERVER
administration screen, you can set it up from "DNS record settings" > "Add DNS record".

For details on how to set it up, please see the following article.





An easy-to-understand explanation of SPF settings using concrete examples!
Many companies have experienced sending out email newsletters only to have errors or their emails treated as spam. If the "SPF" settings are not configured correctly, emails sent from your company may be marked as spam. In this article, we will clearly explain how to set up and check the correct SPF settings to prevent emails from being marked as spam. We will also provide examples of how to write records, so please use them as a reference.
Alala Message


Examples and key points of SPF records
When setting an SPF record, it is important to write it as simply as possible to avoid mistakes.
Below is an example of how to write an SPF record and an explanation of the key points.



Basic description (IP address)
[Domain]. IN TXT "v=spf1 +ip4:[IP address] ~all"



Example 1) example.co.jp. IN TXT "v=spf1 +ip4:192.xxx.xxx.xx ~all"
Example 2) example.co.jp. IN TXT "v=spf1 +ip4:192.xxx. xxx.xx +ip4:192.xxx.xxx.xx ~all"

This is the most basic method, where you directly write the IP address of the sending mail server. If you want to authenticate emails sent from the IP address "192.xxx.xxx.xx" of the domain "example.co.jp", add an SPF record like the one above. If there are multiple addresses, write them all on one line, as in Example 2.




What is an IP address?
An IP address is a number that identifies a device on a network. It is used to avoid misidentifying the other party, and it plays a role similar to an address or phone number on a network.
Alala Message


Described by network
[DOMAIN].IN TXT "v=spf1 +ip4:[NETWORK] ~all"



Example 1) example.co.jp. IN TXT "v=spf1 +ip4:192.xx.xx.x/24-all"
Example 2) example.co.jp. IN TXT "v=spf1 ip4:192.xxx .xxx.xx ip4:192.xxx.xxx.xx ip4:192.xx.xx.x/24-all -all"

This is a method to describe the network of mail servers that may send email using the CIDR method. If you specify a wide range of networks, the SPF record itself will not be effective, so when describing the network, please specify the minimum range.

Also, as in Example 2, it is possible to combine direct IP address specification and network specification.