# Mautic Error: Email Rejected by Mailrelay – How to Fix It?
**URL:** https://forum.mautic.org/t/mautic-error-email-rejected-by-mailrelay-how-to-fix-it/35436
**Category:** Product Support
**Created:** [April 2, 2025, 12:05am UTC](https://forum.mautic.org/t/mautic-error-email-rejected-by-mailrelay-how-to-fix-it/35436 "2025-04-02T00:05:18Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@miguelfalcon](https://forum.mautic.org/u/miguelfalcon)
#### Post date: [April 2, 2025, 12:05am UTC](https://forum.mautic.org/t/mautic-error-email-rejected-by-mailrelay-how-to-fix-it/35436/1 "2025-04-02T00:05:18Z")
My Mautic version is: 6.0.0
My PHP version is: 8.3.19
My Database type and version is: 10.11.11-MariaDB-cll-lve
In Mautic’s settings, I have **[info@domain.com](mailto:info@domain.com)** configured as the sender and SMTP set up in **Mailrelay**.
However, when sending an email from Mautic, I get this error:
> Expected response code “250/251/252” but got code “550”, with message “550 [E3] Message rejected because sender’s email is not confirmed.”
When I check the Mailrelay log, this is the result:
```auto
02/04/2025 01:26:38 info+bounce_67ec762e15585784344497@domain.com test@gmail.com [E3] Message rejected because sender's email is not confirmed.
```
It looks like Mautic is trying to send the email using this address (which doesn’t exist or isn’t configured):
**[info+bounce\_67ec762e15585784344497@domain.com](mailto:info+bounce_67ec762e15585784344497@domain.com)**
**info** is the main email, and **bounce** is the one I have set up for bounces. Somehow, Mautic is merging them and adding an underscore and a random ID before the **@**.
Why is this happening, and how can I fix it?
(The addresses I mention in the post are fictitious, but we can assume that I have real addresses configured.)
---
### Author:  [@luisconceicao1](https://forum.mautic.org/u/luisconceicao1)
#### Post date: [May 19, 2025, 12:04pm UTC](https://forum.mautic.org/t/mautic-error-email-rejected-by-mailrelay-how-to-fix-it/35436/2 "2025-05-19T12:04:47Z")
I can’t get my mautic V6 indent bounces. I’ve already tried with imap and it doesn’t work! Any help??
---
### Author:  [@joeyk](https://forum.mautic.org/u/joeyk)
#### Post date: [May 21, 2025, 11:29am UTC](https://forum.mautic.org/t/mautic-error-email-rejected-by-mailrelay-how-to-fix-it/35436/3 "2025-05-21T11:29:45Z")
Can you share what SMTP are you using?