How to send email with Phpmailer with DKIM signature?
Solution 1
$DKIM_private is for your private key and $DKIM_identity, well I'm not sure, but it's optional, and you can find more info here: http://dkim.org/specs/draft-allman-dkim-base-01.html#anchor9. Here is some example code.
$mail->DKIM_domain = 'mydomain.com';
$mail->DKIM_private = '/path/to/private_key';
$mail->DKIM_selector = 'default'; //this effects what you put in your DNS record
$mail->DKIM_passphrase = '1234567';
Hope that helps
Solution 2
You need to break up the DKIM-Signature
header such that each property appears on a new line. The PHPMailer implementation of DKIM has some issues that must be corrected.
The $DKIM_identity
value is optional. To understand the role of $DKIM_private
, see the DKIM_Sign
method.
Angolao
Updated on July 05, 2022Comments
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Angolao almost 2 years
I`m using PHPmailer to sent email.
I installed postfix service and DKIM-Milter to generate the key.
It works fine if i use command line to sent mail, and the mail is with DKIM signature displaying "signed-by:mydomain.com"
Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 182.50.xxx.xxx as permitted sender) [email protected]; dkim=pass [email protected] DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mydomain.com; s=default; t=1325531456; bh=+gZFhu4Id2AXb8UVbFLzDVVlChWGhvxvJUIdjdMLQsk=; h=To:Subject:Message-Id:Date:From; b=mH4GV8ayicc6UMn1uopCc9VJb5v2MiOKQpEtwJjckzoJ8ePhRKQIZI5KnzSdSoSP3 BtmehOQhMn9kIR/TlL2dlSog2EkRNeAaWcmO1K3khtCZ7rkXHGJsDn9C6l49K0tJa2 rplPOSI7wS8+3NCEiuc5sjZimPo4v9WuTECVqxkg=
But i want to use PHPmailer (5.1) to sent mail with DKIM signature supported, but returns this:
Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 182.50.xxx.xxx as permitted sender) [email protected]; dkim=neutral (bad format) [email protected] DKIM-Signature: v=1; a=rsa-sha1; q=dns/txt; l=70; s=default; t=1325533594; c=relaxed/simple; h=From:To:Subject; d=mydomain.com; [email protected]; z= | |Subject:=20Testing=20email=20from=20phpmailer; bh=lC+16EvauA2HuJG03ArE6CtgLuY=; b=
I checked the class.phpmailer.php file, and it has some DKIM options:
public $DKIM_selector = 'default'; /** * Used with DKIM DNS Resource Record * optional, in format of email address '[email protected]' * @var string */ public $DKIM_identity = ''; /** * Used with DKIM DNS Resource Record * optional, in format of email address '[email protected]' * @var string */ public $DKIM_domain = ''; /** * Used with DKIM DNS Resource Record * optional, in format of email address '[email protected]' * @var string */ public $DKIM_private = '';
How to configure this option? I know the public key and private key, but what`s is $DKIM_private and $DKIM_identity?