Title: Authentification data error
Last modified: August 30, 2016

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# Authentification data error

 *  Resolved [chevalhack](https://wordpress.org/support/users/chevalhack/)
 * (@chevalhack)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/authentification-data-error/)
 * Hello,
 * I dont understand why sometimes Postman cant send mail due to an authentification
   data error and some time after it’s succes ? The authentification data are correct
   and i’m sure of it !
 * [https://wordpress.org/plugins/postman-smtp/](https://wordpress.org/plugins/postman-smtp/)

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

 *  Plugin Author [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * (@jasonhendriks)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/authentification-data-error/#post-6410305)
 * This may be a problem at the mail server. You can review the session transcript
   in the email log to confirm that Postman is always sending the same username 
   and password.
 *  Thread Starter [chevalhack](https://wordpress.org/support/users/chevalhack/)
 * (@chevalhack)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/authentification-data-error/#post-6410313)
 * The session transcript in the mail log confirm that Postman send the same username
   and password (the informations are crypted but the crypted key is the same in
   a succed and fail mail). Which sort of problem occurs on the sever ?
 *  Plugin Author [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * (@jasonhendriks)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/authentification-data-error/#post-6410318)
 * I couldn’t say. You’d have to ask the people who run the mail server.

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

The topic ‘Authentification data error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/postman-smtp_7c7b78.svg)
 * [Postman SMTP Mailer/Email Log](https://wordpress.org/plugins/postman-smtp/)
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 * 3 replies
 * 2 participants
 * Last reply from: [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/authentification-data-error/#post-6410318)
 * Status: resolved