# Problem mit dem MailVersand ("Zend\_Mail"): Unrecognized authentication type

**URL:** <https://forum.shopware.com/t/problem-mit-dem-mailversand-zend-mail-unrecognized-authentication-type/100494>\
**Category:** Shopware 5\
**Created:** [12. Juli 2023 um 13:54 UTC](https://forum.shopware.com/t/problem-mit-dem-mailversand-zend-mail-unrecognized-authentication-type/100494 "2023-07-12T13:54:56Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Milad](https://avatars.discourse-cdn.com/v4/letter/m/919ad9/32.png) [@Milad](https://forum.shopware.com/u/Milad)\
**Post date:** [12. Juli 2023 um 13:54 UTC](https://forum.shopware.com/t/problem-mit-dem-mailversand-zend-mail-unrecognized-authentication-type/100494/1 "2023-07-12T13:54:56Z")

</div>

Hi,

ich habe ein Problem mit dem Mailversand durch SW5.  
Ich bekomme diese Meldung:  
`504 5.7.4 Unrecognized authentication type`

Hier ist das Log:

```auto
^ array:13 [▼
  0 => "220 SRV02EX16.private.domain.de Microsoft ESMTP MAIL Service ready at Wed, 12 Jul 2023 15:33:19 +0200
"
  1 => "EHLO mx02.domain.de
"
  2 => "250-SRV02EX16.private.domain.de Hello [IPAddress]
"
  3 => "250-SIZE 37748736
"
  4 => "250-PIPELINING
"
  5 => "250-DSN
"
  6 => "250-ENHANCEDSTATUSCODES
"
  7 => "250-STARTTLS
"
  8 => "250-8BITMIME
"
  9 => "250-BINARYMIME
"
  10 => "250 CHUNKING
"
  11 => "AUTH LOGIN
"
  12 => "504 5.7.4 Unrecognized authentication type
"
]

```

Ich habe es über SSH & Openssl CMND probiert und **die Mails werden geschickt** :

> openssl s\_client -crlf -connect [mx02.domain.de:25](http://mx02.domain.de:25) -starttls smtp  
> EHLO [mx02.domain.de](http://mx02.domain.de)  
> AUTH LOGIN  
> username  
> passwrod  
> MAIL FROM: [im-shop@domain.de](mailto:im-shop@domain.de)  
> rcpt to: mymail  
> DATA  
> subject: Your Subject  
> from: [im-shop@domain.de](mailto:im-shop@domain.de)  
> to: mymail  
> .  
> QUIT

Der Server sollte also korrekt konfiguriert sein. Was könnte das Problem sein?

Danke im Vorab! \<3