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Allow configuring the SMTP HELO/EHLO name (PHPMAILER_HELO) #1144

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Allow configuring the SMTP HELO/EHLO name (PHPMAILER_HELO) #1144

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2 changes: 1 addition & 1 deletion public_html/lists/admin/class.phplistmailer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -76,7 +76,7 @@ public function __construct($messageid, $email, $inBlast = true, $exceptions = f
if (isset($_GET['page']) && $_GET['page'] == 'send') {
$this->inBlast = false;
}
$this->Helo = getConfig('domain');
$this->Helo = defined('PHPMAILER_HELO') && PHPMAILER_HELO ? PHPMAILER_HELO : getConfig('domain');

if ($GLOBALS['emailsenderplugin']) {
$this->Mailer = 'plugin';
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4 changes: 4 additions & 0 deletions public_html/lists/config/config_extended.php
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Expand Up @@ -640,6 +640,10 @@
// it can either be "ssl" or "tls" or false to not use SSL/TLS at all
// define("PHPMAILER_SECURE",'ssl');

// Hostname to use in the SMTP HELO/EHLO greeting. Defaults to the "domain" setting.
// Set this when your SMTP server rejects the list domain as HELO (e.g. use the web server's FQDN)
// define('PHPMAILER_HELO', 'www.mydomain.com');

//# SMTP debugging
// Enable debugging output by phpmailer when sending test emails
// See https://phpmailer.github.io/PHPMailer/classes/PHPMailer-PHPMailer-PHPMailer.html#property_SMTPDebug
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