Title: Error: Postman is missing a required PHP library.
Last modified: October 27, 2016

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# Error: Postman is missing a required PHP library.

 *  [luongbaby](https://wordpress.org/support/users/luongbaby/)
 * (@luongbaby)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/error-postman-is-missing-a-required-php-library/)
 * Hi !
 * when i move my site to new server . i had found this error from Postman SMTP ,
   messenge is: “Error: Postman is missing a required PHP library” . This messenge
   show on main Dashboard wordpress .
 * I have a question: what function need add to library PHP for Postman SMTP running?
 * Thank you

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [d4rkm4nx99](https://wordpress.org/support/users/d4rkm4nx99/)
 * (@d4rkm4nx99)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/error-postman-is-missing-a-required-php-library/#post-8427868)
 * Hello,
 * I have same issue, i am using PHP 7.0.12.
    Please provide a answer.
 * error log :
 * [21-Oct-2016 19:41:40 UTC] ERROR PostmanWpMail: Exception code=421 message=Unexp
   ected failure, please try later
    [24-Oct-2016 22:04:41 UTC] ERROR PostmanWpMail:
   Exception code=421 message=Unexp ected failure, please try later [24-Oct-2016
   22:04:42 UTC] ERROR PostmanWpMail: Exception code=421 message=Unexp ected failure,
   please try later [27-Oct-2016 23:16:13 UTC] ERROR PostmanWpMail: Exception code
   =421 message=Unexp ected failure, please try later [31-Oct-2016 02:25:02 UTC]
   ERROR PostmanWpMail: Exception code=421 message=Unexp ected failure, please try
   later [03-Nov-2016 02:29:43 UTC] ERROR PostmanWpMail: Exception code=421 message
   =Unexp ected failure, please try later
 * Thank You!
    -  This reply was modified 9 years, 7 months ago by [d4rkm4nx99](https://wordpress.org/support/users/d4rkm4nx99/).
 *  [wpmacblog](https://wordpress.org/support/users/wpmacblog/)
 * (@wpmacblog)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/error-postman-is-missing-a-required-php-library/#post-8434281)
 * I went back to PHP 5.6.28 (from PHP 7.0.12) and it fixed all PHP errors.
 *  [davidrivera](https://wordpress.org/support/users/davidrivera/)
 * (@davidrivera)
 * [9 years ago](https://wordpress.org/support/topic/error-postman-is-missing-a-required-php-library/#post-9157148)
 * You shouldn’t have to downgrade your PHP version to use this plugin. The missing
   library is called “iconv”. It’s described as “A module for PHP applications that
   need to convert character sets”. You can have your server admin install it, or
   update/install the PHP extension yourself if you have access via WHM. It’s something
   like Home > Software > EasyApache 4 Then go to PHP Extensions and search for 
   iconv.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Error: Postman is missing a required PHP library.’ is closed to new replies.

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 * 3 replies
 * 4 participants
 * Last reply from: [davidrivera](https://wordpress.org/support/users/davidrivera/)
 * Last activity: [9 years ago](https://wordpress.org/support/topic/error-postman-is-missing-a-required-php-library/#post-9157148)