Title: Bug with long header value "from" Last modified: August 21, 2016 --- # Bug with long header value "from" * Resolved [demon_ru](https://wordpress.org/support/users/demon_ru/) * (@demon_ru) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/) * classes/class-s2-core.php (356): * ``` $header['From'] = mb_encode_mimeheader($this->myname, 'UTF-8', 'Q') . " <" . $this->myemail . ">"; $header['Reply-To'] = mb_encode_mimeheader($this->myname, 'UTF-8', 'Q') . " <" . $this->myemail . ">"; ``` * longest string “from” is splitted to several rows with dilimiter “\n”. * wp-includes/pluggable.php function wp_mail (line 266). of all the header lines is only the first. * Yes. It is bug of wordpress. Now even publishing a test email is not sent, as in Russian in the “from” substituted largish text. * [https://wordpress.org/plugins/subscribe2/](https://wordpress.org/plugins/subscribe2/) Viewing 9 replies - 1 through 9 (of 9 total) * [Matt Robinson](https://wordpress.org/support/users/mattyrob/) * (@mattyrob) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705040) * [@demon_ru](https://wordpress.org/support/users/demon_ru/), * Looking at some of the comments [here](http://www.php.net/manual/en/function.mb-encode-mimeheader.php) some of your issue may be down to your PHP version and server configuration also. * Thread Starter [demon_ru](https://wordpress.org/support/users/demon_ru/) * (@demon_ru) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705049) * PHP 5.3.27 I can not clearly explained the problem. After converting a string to Quoted-Printable, it becomes long. According to the RFC is transferred to another line. wp_mail trying to adjust header “from” (as it seems right). It spoils this header, as it leaves only one row of the total value of the (first). * Did I fix this server configuration? * [Matt Robinson](https://wordpress.org/support/users/mattyrob/) * (@mattyrob) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705107) * [@demon_ru](https://wordpress.org/support/users/demon_ru/), * Thank you for trying to explain further. So is the issue in Subscribe2, the wp_mail() function or the PHPMailer library? * Thread Starter [demon_ru](https://wordpress.org/support/users/demon_ru/) * (@demon_ru) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705114) * It’s the issue in wp_mail() function of WordPress. And your plugin users are affected by this error 🙁 * [Matt Robinson](https://wordpress.org/support/users/mattyrob/) * (@mattyrob) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705119) * [@demon_ru](https://wordpress.org/support/users/demon_ru/), * Are you using the UTF-8 character set on your site? (In the DB_COLLATE and DB_CHARSET values of wp-config.php and in the database charset in PHPMyAdmin) * Also, I think the issue comes from the [addAnAddress](https://core.trac.wordpress.org/browser/trunk/src/wp-includes/class-phpmailer.php#L747) funtion in the PHPMailer class, in particular this line: `$name = trim(preg_replace('/[\ r\n]+/', '', $name)); //Strip breaks and trim` * Thread Starter [demon_ru](https://wordpress.org/support/users/demon_ru/) * (@demon_ru) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705124) * UTF-8 on my site, on mysql backend. I am sure all is correct. * headers: * ``` from: line1 line2 line3 Reply-To: line4 ... ``` * wp-includes/pluggable.php line 249 foreach Analyzed only the first line. And headers becomes: * ``` from: Reply-To: line4 ``` * And the letter was not sent, as this line does not contain a domain. * [Matt Robinson](https://wordpress.org/support/users/mattyrob/) * (@mattyrob) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705162) * [@demon_ru](https://wordpress.org/support/users/demon_ru/), * I think this is coming from wp_mail() after all but I can’t quite figure out exactly when and where it’s happening just yet – I’m getting there bit by bit though and could perhaps offer a fix if I get a better idea of when it happens. * [Matt Robinson](https://wordpress.org/support/users/mattyrob/) * (@mattyrob) * [12 years, 2 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705180) * [@demon_ru](https://wordpress.org/support/users/demon_ru/), * You could try this plugin which plug the core wp_mail function with a multibyte version: [https://kimmo.suominen.com/sw/mbmail/](https://kimmo.suominen.com/sw/mbmail/) * It does look quite old now though. * [arty.name](https://wordpress.org/support/users/artyname/) * (@artyname) * [11 years, 11 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705384) * I have I have just reported a WP bug for this issue: [https://core.trac.wordpress.org/ticket/28473](https://core.trac.wordpress.org/ticket/28473) Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Bug with long header value "from"’ is closed to new replies. * ![](https://ps.w.org/subscribe2/assets/icon-256x256.png?rev=2318630) * [Subscribe2 - Form, Email Subscribers & Newsletters](https://wordpress.org/plugins/subscribe2/) * [Frequently Asked Questions](https://wordpress.org/plugins/subscribe2/#faq) * [Support Threads](https://wordpress.org/support/plugin/subscribe2/) * [Active Topics](https://wordpress.org/support/plugin/subscribe2/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/subscribe2/unresolved/) * [Reviews](https://wordpress.org/support/plugin/subscribe2/reviews/) * 9 replies * 3 participants * Last reply from: [arty.name](https://wordpress.org/support/users/artyname/) * Last activity: [11 years, 11 months ago](https://wordpress.org/support/topic/bug-with-long-header-value-from/#post-4705384) * Status: resolved