Mail [e-mail] doesn't arrive

Step 1

Please check the following details about the mails:

• dkim
• spf
• dmarc

These 3 properties should pass. Our DMARC rule dictates that if DKIM or SPF fails the mail should be rejected by the receivers mail server. This ensures that any fake email would not be delivered to the recipient at all.

Example:

ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@proodoss.com header.s=s1 header.b=H7z0S2Fk;
       spf=pass (google.com: domain of bounces+17379045-1005- someaddress=[e-mail] designates 149.72.73.243 as permitted sender) smtp.mailfrom="bounces+17379045-1005-someaddress=[e-mail]";
       dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=proodoss.com

There is a Return-Path field in the header of the email, which could look like something as follows:

Return-Path: <bounces+17379045-1005- someaddress=companydomain.com @em9093.proodoss.com>

This ensures that if the recipient bounces back the email, this information is logged and we can get notified about it.

This field is different from the sender address, which is [e-mail].

Step 2

Since we are using always the same IP ( 149.72.73.243 ), if that is possible, whitelist the emails by IP.