Title: Missing To header
Last modified: April 18, 2021

---

# Missing To header

 *  Resolved [arnonalex](https://wordpress.org/support/users/arnonalex/)
 * (@arnonalex)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/missing-to-header-2/)
 * Hi.
    What “Missing To header” means? Trial email arrives without issue. The problem
   is from the forms —
 *     ```
       Mailer: postsmtp
       HostName: domain.co.il
       cURL Version: 7.71.0
       OpenSSL Version: OpenSSL/1.1.1d
       OS: Linux ust30.fastcrver.com 3.10.0-962.3.2.lve1.5.49.el7.x86_64 #1 SMP Thu Mar 4 05:39:46 EST 2021 x86_64
       PHP: Linux 7.2.34 C
       PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
       WordPress: 5.3.7 he_IL UTF-8
       WordPress Theme: WR Mueb 12
       WordPress Plugins:
       WordPress wp_mail Owner: /home/yaiast/public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
       WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args
       WordPress phpmailer_init Action(s): wpcf7_phpmailer_init
       Postman: 2.0.22
       Postman Sender Domain (Envelope|Message): domain.co.il | domain.co.il
       Postman Prevent Message Sender Override (Email|Name): No | No
       Postman Active Transport: Default (smtp:none:none://localhost:25)
       Postman Active Transport Status (Ready|Connected): No | Yes
       Postman Deliveries (Success|Fail): 19 | 27
       ```
   
    -  This topic was modified 5 years, 1 month ago by [arnonalex](https://wordpress.org/support/users/arnonalex/).
    -  This topic was modified 5 years, 1 month ago by [arnonalex](https://wordpress.org/support/users/arnonalex/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fmissing-to-header-2%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/missing-to-header-2/#post-14337925)
 * Hi [@arnonalex](https://wordpress.org/support/users/arnonalex/),
 * What SMTP service are you using? Looking at your diagnostics log, you are sending
   form `localhost` port 25. This is not a very common set up, so is this intentional?
 * Kind Regards,
    Tim
 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/missing-to-header-2/#post-14372222)
 * Hi [@arnonalex](https://wordpress.org/support/users/arnonalex/),
 * We haven’t heard from you in a while, so I’ll mark this thread as resolved. If
   you have any further questions please feel free to open a new thread, and link
   to this one.
 * Kind Regards,
    Tim

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Missing To header’ is closed to new replies.

 * ![](https://ps.w.org/post-smtp/assets/icon-128x128.gif?rev=3209655)
 * [Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App](https://wordpress.org/plugins/post-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/post-smtp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/post-smtp/)
 * [Active Topics](https://wordpress.org/support/plugin/post-smtp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/post-smtp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/post-smtp/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Tim](https://wordpress.org/support/users/tneville/)
 * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/missing-to-header-2/#post-14372222)
 * Status: resolved