# Postmark Server defaults to Transactional Stream

**URL:** <https://forum.mautic.org/t/postmark-server-defaults-to-transactional-stream/17084>\
**Category:** Product Support\
**Tags:** discussion\
**Created:** [November 20, 2020, 5:33pm UTC](https://forum.mautic.org/t/postmark-server-defaults-to-transactional-stream/17084 "2020-11-20T17:33:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![av1dlearner](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/av1dlearner/32/997_2.png) [@av1dlearner](https://forum.mautic.org/u/av1dlearner)\
**Post date:** [November 20, 2020, 5:33pm UTC](https://forum.mautic.org/t/postmark-server-defaults-to-transactional-stream/17084/1 "2020-11-20T17:33:53Z")

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**Your software**  
My Mautic version is: v3.1.2  
My PHP version is: 7.1.33

**Your problem**  
My problem is:  
Postmark offers two streams

Transactional - [smtp.postmarkapp.com](http://smtp.postmarkapp.com)  
Marketing - Broadcasts [smtp-broadcasts.postmarkapp.com](http://smtp-broadcasts.postmarkapp.com)  
The default server when selecting postmark in the config is [smtp.postmarkapp.com](http://smtp.postmarkapp.com)

**Steps I have tried to fix the problem:**  
I tried changing it in app/bundles/EmailBundle/Swiftmailer/Transport/PostmarkTransport.php  
to [smtp-broadcasts.postmarkapp.com](http://smtp-broadcasts.postmarkapp.com)

But it still defaults to transactional stream

I also tried editing local.php ‘mailer\_host’ =\> ‘[smtp-broadcasts.postmarkapp.com](http://smtp-broadcasts.postmarkapp.com)’,

> <https://github.com/mautic/mautic/issues/9420>
>
> Postmark offers two streams
> Transactional - smtp.postmarkapp.com
> Marketing - Broadcasts smtp-broadcasts.postmarkapp.com
> The default server when selecting postmark in the config is smtp.postmarkapp.com
> I recommend
> Rename Email...

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<div class="post-metadata">

**Author:** ![bunce69](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/bunce69/32/143_2.png) [@bunce69](https://forum.mautic.org/u/bunce69)\
**Post date:** [January 29, 2024, 12:17pm UTC](https://forum.mautic.org/t/postmark-server-defaults-to-transactional-stream/17084/2 "2024-01-29T12:17:01Z")

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Any update here ?

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<div class="post-metadata">

**Author:** ![av1dlearner](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/av1dlearner/32/997_2.png) [@av1dlearner](https://forum.mautic.org/u/av1dlearner)\
**Post date:** [January 29, 2024, 11:29pm UTC](https://forum.mautic.org/t/postmark-server-defaults-to-transactional-stream/17084/3 "2024-01-29T23:29:40Z")

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You need to include the stream header `X-PM-Message-Stream`