Title: email authentication error
Last modified: September 1, 2016

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# email authentication error

 *  [aamm19](https://wordpress.org/support/users/aamm19/)
 * (@aamm19)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/email-authentication-error/)
 * Hello!
 * I tried installing your plugin to test the outgoing SMTP connection from my webpage
   server to the zoho.com service and I’ve been getting “email authentication error”
   when I try to send an email.
 * Here’s the diagnotic test results:
 *     ```
       OS: Linux hv2svg030.neubox.net 2.6.32-673.8.1.lve1.4.3.1.el6.x86_64 #1 SMP Thu May 5 16:06:47 EDT 2016 x86_64
       PHP: Linux 5.5.37 C
       PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=No, mcrypt=Yes, zlib_encode=Yes
       WordPress: 4.5.3 es_ES UTF-8
       WordPress Theme: Onetone Pro
       WordPress Plugins: Debug, Limit Login Attempts, Postman SMTP
       WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
       Postman: 1.7.2
       Postman Sender Domain (Envelope|Message): shine.com.mx | shine.com.mx
       Postman Prevent Message Sender Override (Email|Name): Yes | Yes
       Postman Active Transport: SMTP (smtp:tls:login://smtp.zoho.com:587)
       Postman Active Transport Status (Ready|Connected): Yes | Yes
       Postman Deliveries (Success|Fail): 5 | 7
       Postman PHP LogLevel: 5000
       ```
   
 * after having a (long and excruciating) talk with tech support I showed them the
   server is blocking the connection to the SMTP server [warning where it says it’s instead connecting to the other server](http://imgur.com/G4Kwysm)
   and [Trace results](http://imgur.com/zcIGC84).
 * What I would like to know is that, based on this information, what would we need
   to do to have the problem fixed. Thanks in advance.
 * [https://wordpress.org/plugins/postman-smtp/](https://wordpress.org/plugins/postman-smtp/)

The topic ‘email authentication error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/postman-smtp_7c7b78.svg)
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 * 0 replies
 * 1 participant
 * Last reply from: [aamm19](https://wordpress.org/support/users/aamm19/)
 * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/email-authentication-error/)
 * Status: not resolved