# STREAM\_CRYPTO\_METHOD\_TLS\_CLIENT to STREAM\_CRYPTO\_METHOD\_TLSv1\_2\_CLIENT

**URL:** <https://forum.mautic.org/t/stream-crypto-method-tls-client-to-stream-crypto-method-tlsv1-2-client/28920>\
**Category:** Product Support\
**Tags:** mautic-4\
**Created:** [August 12, 2023, 8:01pm UTC](https://forum.mautic.org/t/stream-crypto-method-tls-client-to-stream-crypto-method-tlsv1-2-client/28920 "2023-08-12T20:01:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![team](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@team](https://forum.mautic.org/u/team)\
**Post date:** [August 12, 2023, 8:01pm UTC](https://forum.mautic.org/t/stream-crypto-method-tls-client-to-stream-crypto-method-tlsv1-2-client/28920/1 "2023-08-12T20:01:54Z")

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**EasyApache 4**  
**My Mautic version is: 45\_mautic-449**  
**My PHP 80, PHP 8.0.29-1.1.3.cpanel**  
**extention: php80-php-fileinfo**  
**cPanel & WHM on AlmaLinux**  
**OS: AlmaLinux v8.8.0 STANDARD kvm**  
**cPanel Version 112.0.5**

Support Ticket

How do I change the STREAM\_CRYPTO\_METHOD\_TLS\_CLIENT to STREAM\_CRYPTO\_METHOD\_TLSv1\_2\_CLIENT (or other version) in /mautic/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php

Visit the following URL link, StreamBuffer.php, [Nat Lookup · GitHub](https://gist.github.com/DevCEDTeam/b289744ad655116d230e4ff65c39e02b?permalink_comment_id=4659317#gistcomment-4659317)

Visit the Summary of the TLS encryption (STARTTLS) Error Message, [Nat Lookup · GitHub](https://gist.github.com/DevCEDTeam/b289744ad655116d230e4ff65c39e02b?permalink_comment_id=4657814#gistcomment-4657814)

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<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [August 13, 2023, 3:39pm UTC](https://forum.mautic.org/t/stream-crypto-method-tls-client-to-stream-crypto-method-tlsv1-2-client/28920/2 "2023-08-13T15:39:08Z")

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Generally you do not change code of php dependencies.

You could of course change the code in those php files and clear the cache and if everything is done right, instance should work.

But you can also make your instance completely unusable so proceed with caution.

Regards, M.