email_protection_resources

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email_protection_resources [2018/01/14 19:35]
Stephane de Labrusse
email_protection_resources [2021/03/23 18:02] (current)
Stephane de Labrusse [How to check it ?]
Line 257: Line 257:
 </file> </file>
  
 +You can check also by comparing this two commands in the terminal
 +
 +<file>
 +/usr/bin/dig @1.1.1.1 +short +tries=1 +retry=0 +time=2 -x publicIP
 +reverseIP.
 +/usr/bin/dig @1.1.1.1 +short +tries=1 +retry=0 +time=2 reverseIP.
 +publicIP.
 +</file>
 +
 +the reverseIP. found must match the publiIP retrieved in the second command line.
 =====SPF and SenderID===== =====SPF and SenderID=====
  
Line 328: Line 338:
 Dkim is really simple with NethServer, go to the email panel and allow DKIM in the setting of your domain, then retrieve the digital key of this domain. Then this key must be saved in a **TXT record** in your (external) public DNS provider. Dkim is really simple with NethServer, go to the email panel and allow DKIM in the setting of your domain, then retrieve the digital key of this domain. Then this key must be saved in a **TXT record** in your (external) public DNS provider.
  
-DKIM needs to be configured in the public DNS. You must create a **TXT** record 'default._domainkey' or 'default._domainkey.domain.com' in the DNS zone of your provider. **Your DKIM selector is default**+DKIM needs to be configured in the public DNS. You must create a **TXT** record '%%default._domainkey%%' or '%%default._domainkey.domain.com%%' in the DNS zone of your provider. **Your DKIM selector is default**
  
 <file> <file>
Line 377: Line 387:
 </file> </file>
  
 +Here's a more complex DMARC entry for the test domain DMARC site:
 +
 +<file>
 +v=DMARC1; p=quarantine; rua=mailto:reports@dmarc.site; ruf=mailto:reports@dmarc.site; adkim=r; aspf=r; rf=afrf
 +</file>
 +
 +  * The "p" option has three options: none, quarantine, or reject, for how email that violates policies should be handled
 +  * The adkim and aspf options define how strictly DKIM and SPF policy should be applied, with 's' indicating strict and 'r' indicating relaxed
 +  * The RUA provides an address for aggregate data reports, while the RUF provides an address for forensic reports
 ==== How to check it ?==== ==== How to check it ?====
   * Web tools   * Web tools
  • email_protection_resources.1515958530.txt.gz
  • Last modified: 2018/01/14 19:35
  • by Stephane de Labrusse