# Webhook Postmark support: management of bounces, spam and unsubscription

**URL:** <https://forum.mautic.org/t/webhook-postmark-support-management-of-bounces-spam-and-unsubscription/25799>\
**Category:** General Discussion\
**Created:** [October 23, 2022, 9:07pm UTC](https://forum.mautic.org/t/webhook-postmark-support-management-of-bounces-spam-and-unsubscription/25799 "2022-10-23T21:07:57Z")\
**Posts on this page:** 1\
**Showing post:** 3

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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:** [January 12, 2024, 6:51pm UTC](https://forum.mautic.org/t/webhook-postmark-support-management-of-bounces-spam-and-unsubscription/25799/3 "2024-01-12T18:51:49Z")

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This is obsolete in 5.x not sure how to get it working

> [@Mautic 5 New callback process results in 404](https://forum.mautic.org/t/mautic-5-new-callback-process-results-in-404/30479):
>
> Your software My Mautic version is: 5.0.1 My PHP version is: 8.1.27 My Database type and version is: Your problem Hi everyone, I upgraded to 5.0.1 clap but I saw that the callback process is now unified under [https://mautic.example.com/mailer/callback](https://mautic.example.com/mailer/callback) however my postmark webhook calls will get a 404 These errors are showing in the log: "POST /mailer/callback HTTP/1.1" 404 5592 "-" "Postmark" "POST /mailer/callback HTTP/1.1" 404 5592 "-" "Postmark"

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