Anti-spam measures¶
To ensure reliable email delivery, Repro requires SPF, DKIM, and DMARC authentication. These prevent unauthorized email sending and protect your domain’s reputation. This page explains the authentication setup process before sending emails.
About SPF, DKIM, and DMARC authentication¶
Authentication method |
Description |
|---|---|
SPF (Sender Policy Framework) |
A mechanism to authorize mail servers allowed to send from a specific domain. Prevents spoofed emails from unauthorized servers. |
DKIM (DomainKeys Identified Mail) |
Adds a digital signature to emails to prevent tampering after sending. |
DMARC (Domain-based Message Authentication, Reporting, and Conformance) |
A policy to verify correct SPF and DKIM setup and determine how to handle unauthorized emails. |
Setup flow¶
Please follow these steps for setup.
Respond to the hearing form sent by Repro
Set the configuration values issued by Repro to your domain
Receive a connectivity confirmation email after domain setup
Respond to the hearing form sent by Repro¶
When you sign up for the email option, Repro Customer Success or Sales will send you a hearing form regarding the domain to be used for email delivery and the method of email address integration. Please answer the questions in the form.
Set the configuration values issued by Repro to your domain¶
Based on the information in the hearing form, Repro will send you the DNS record settings for your sender domain. Please configure these in your DNS service’s management screen.
Note
‘example.com’ is a sample. Replace it with your actual domain.
Example of configuration values sent from Repro
Domain |
Type of DNS Record |
Example |
|---|---|---|
rprmail.example.com |
MX |
“10 feedback-smtp.ap-northeast-1.amazonses.com” |
rprmail.example.com |
TXT |
“v=spf1 include:amazonses.com ~all” |
1234rpr._domainkey.example.com |
TXT |
“p=aaaaaa” “bbbbb” |
_dmarc.example.com |
TXT |
“v=DMARC1; p=none;” |
Note
To support SPF, DKIM and DMARC, you will need to set various records for subdomains of your domain. The ‘rprmail’ subdomain is the default for SPF, but you can change it if needed. If you want to use a subdomain other than ‘rprmail’, please contact us. Note: you cannot set records for a domain without a subdomain (e.g., just example.com).
Warning
Please keep the TXT record value for DKIM authentication within a single record.
In a TXT record, each part enclosed in double quotes is counted as one string, and each string can be up to 255 characters. If you need to set a value longer than 255 characters, concatenate multiple strings separated by spaces within the same TXT record.
The DKIM record value we provide is longer than 255 characters, so please concatenate it with spaces and keep it within a single record. If you split it by creating two or more TXT records under the same host name, DKIM authentication will fail.
Example: xxx._domainkey.yyy.jp. 3600 IN TXT “v=DKIM1; p=aaaaaa” “bbbbb”
Receive a connectivity confirmation email after domain setup¶
After completing the domain setup, notify Repro. After confirmation, Repro will send you a connectivity confirmation email.
After setup, please use the following tools to verify your domain settings.
Note
If authentication is insufficient, emails may be sent to the spam folder or blocked entirely.