Sender Blocked - Mailchannel Error

Developers Workers
1

We’re receiving the following error (for every request) when sending email via workers over mailchannel:

Failed to send email: 550 5.7.1 [ESA] c. See https://console.mailchannels.net/insights/bounce?auid=cloudflare\\u0026sender=txid=638f530978b1cba5

I’ve manually redacted the sender’s email.

Their support portal asks to create a support ticket via the hosting provider: https://support.mailchannels.com/hc/en-us/articles/200262680-Fixing-the-550-5-7-1-ESA-sender-blocked-error.

Has anyone faced this issue before?

1 Like
4

I have the same issue and I have no idea of how to fix it. I have sent a few messages to myself, first is ok, but second was blocked.

5

What is the error you’re receiving from the mailchannel’s end?

6

I am also facing this, no idea how to fix it.