Prevent spoofing and phishing with DMARC (Domain-based Message Authentication, Report...
Docs for a good configuration of DMARC DNS records : DNS Record found, DMARC Record found and DMARC Quarantine/Reject policy enabled
DMARC Reports files Analyser
HTML (PHP) table for viewing compliance reports DMARC. Analyze the DMARC reports sent by the mail servers receiving your couriers.
- Download our PHPSource file dmarc-reports.phps (2023/01/13) to install on your server.
HTML visualization of your DMARC reports.- And this PHPSource dmarc-reports-analytics.phps (2023/03/21) to install on your server.
Global spoofing analysis of your mail server, mail domain name with RESTful Server API. -
With this PHPSource dmarc-reports-analytics-rest.phps (2022/07/12) to install on your client server.
Global spoofing analysis of your mail server, mail domain name on RESTful Client API.
- And this PHPSource dmarc-reports-analytics.phps (2023/03/21) to install on your server.
SH script to unzip/store ZIP/GZ DMARC files
Retrieve the analyzes of our DMARC reports from your servers.
API JSON RESTful to analyze mail servers spoofing our mail domain names.
Use the API "ZW3B Api Client" :
- Copy/paste on your Web server the PHP Source file "zw3bApiClient.class.phps (2023/02/10)" and rename the file to .php
Information for using our API "ZW3B Api Client".
DMARC Reports
- Sender Mail server : mail.zw3b.eu
- SPF authorized :
158.69.126.1372607:5300:60:9389:17:4:0:12607:5300:60:9389:17:4c1:0:1a
- SPF authorized :
| Destination Reports | Sender Domain | DMARConformance | SPF | DKIM | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
google.com | lab3w.fr | Auth. | Align. | Poli. | Auth. | Align. | Poli. | |||||||||
| Report ID | Date | Ip Address | Email Volume | Pass | Fail | Rate | Pass | Fail | Pass | Fail | Pass | Pass | Fail | Pass | Fail | Pass |
| 4231(...)1786 | 2025-06-19 01:59:59 | 2607:5300:60:9389:17:4c1:0:1a | 1 | 1 | 0 | 100% | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
Recipient mail server statistics google.com for the domain lab3w.fr
| ||||||||||||||||
Global statistics of the month (JSON file)
- E-mails sent : 1
- E-mails past : 1
- E-mails errors : 0
DMARC statistics on spoofing servers :
- Mail sender servers unauthorized : 0
- E-mails unauthorized : 0
And above all, could a competent authority verify the IP addresses of usurpers ? Should I add "and sanction them" or am I to do it ? Thank you !
Supports DMARC:
- Google Support: Postmaster - Message sending and receiving limits - Gmail SMTP errors and codes
- Outlook.com - Office365: Support - Use DMARC to validate email - Remove yourself from the blocked senders list - Delist Status - Delist IP - SMTP Error Codes in Exchange Online
- Free.fr: Postmaster
- Yahoo Inc : SMTP Error Codes
- For verification SPF, DKIM, DMARC and others, MX Lookup Tool - Check your DNS MX Records online
- Learn and test DMARC : Visualizing communication between mail servers will help you understand what SPF, DKIM and DMARC.
Install "Mail-DMARC" protection on the mail server as security against non-domain compliant incoming (receiving) mail based on message authentication and good compliance :
If you want to install "Mail-DMARC Security and reporting" on your mail server, you can use this OpenSource solution (perl) which will allow you to secure your mailboxes from incoming messages not compliant DMARC.
Otherwise, you can install Rspamd, free antispam software, written in C and distributed under the Apache license; an alternative solution to SpamAssassin.
Rspamd is broadly customizable and allows multiple strategies to avoid Spam and false positives. In conclusion, Rspamd team is not only giving an incredible spam filtering system and email processing framework that allows evaluation of messages by a number of rules including regular expressions.
