# SparkPost Dedicated IP problem
**URL:** https://forum.mautic.org/t/sparkpost-dedicated-ip-problem/29672
**Category:** Product Support
**Tags:** mautic-4
**Created:** [October 16, 2023, 10:58am UTC](https://forum.mautic.org/t/sparkpost-dedicated-ip-problem/29672 "2023-10-16T10:58:15Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@omert](https://forum.mautic.org/u/omert)
#### Post date: [October 16, 2023, 10:58am UTC](https://forum.mautic.org/t/sparkpost-dedicated-ip-problem/29672/1 "2023-10-16T10:58:15Z")
**Your software**
_My PHP version is_ : 8.0.28
_My MySQL/MariaDB version is_ (delete as applicable): 8.0.34
**Updating/Installing Errors**
_I am_ (delete as applicable): Installing / Updating
_Upgrading/installing via_ (delete as applicable) : Web / Command Line
_These errors are showing in the installer_ :
_These errors are showing in the Mautic log_ :
**Your problem**
_My problem is_ :
I am using my Mautic system to send via the SparkPost API.
For some reason, it IS sending but it is not sending through the Dedicated IP that I have configured there.
Could you please help and/or advise?
Your help would be greatly appreciated.
Thanks in advance.
Steps to reproduce issue:
Step 1:
Configure Mautic to use the SparkPost API
Step 2:
Send an email through Mautic
Step 3:
Check received email headers and see if it has been sent via the dedicated IP configured on SparkPost
_Steps I have tried to fix the problem_ :
---
### Author:  [@omert](https://forum.mautic.org/u/omert)
#### Post date: [October 24, 2023, 6:37am UTC](https://forum.mautic.org/t/sparkpost-dedicated-ip-problem/29672/2 "2023-10-24T06:37:55Z")
In addition to my initial post, I would like to add that using SMTP instead of API does currently work when adding the following message header:
**X-MSYS-API: {“options”: {“ip\_pool”: “SPARKPOST\_IP\_POOL\_GOES\_HERE”}}**
However, this is not the case when trying to use the API.