Campaigns still trying to send with AWS after switching from Amazon SES to SendGrid

Product Support
1

Your software
My Mautic version is: 3.2.5
My PHP version is: 8.3
My Database type and version is: mysql

Your problem
My problem is: Hello, everything has been working fine until I switched from Amazon SES to Sendgrid. Transactional emails send normally but campaigns are no longer sending.

These errors are showing in the log:

I get this following error when I click on the contact details:

Last execution error: Expected response code 250 but got code “554”, with message "554 Message rejected: Sending paused for this account. For more information, please check the inbox of the email address associated with your AWS account.

Steps I have tried to fix the problem:
I can’t figure out why it’s still trying to use the old AWS account. I’ve changed the email settings to SendGrid correctly, it successfully connects and test emails work. And like I said above, transactional emails are sending properly. I can see the transactional emails going through on my SendGrid dashboard.

I’ve cleared the cache but that didn’t help.

2

Hi there, I think this is a major issue. Version 3 is way out of date, many security fixes are not available for that old release. I doubt many people still know how to handle v3 anymore.

But you may check local.php, if there are maybe leftovers from AWS SES?

But really - v3 is your biggest issue right now.

3

Thanks for the reply. I took your advice and ended up upgrading to 5.1 this morning. Everything went smoothly except SendGrid doesn’t work at all after installing it through composer.

I made a separate post on it if you have any ideas.

Thanks.

4

I finally got SendGrid configured with Email DSN. Test emails and all form emails are working.

However, campaigns are still not sending.

When I view a contact in the Channels > emails > contacts, it shows this error:

Last execution error:
Expected response code 250 but got code “554”, with message "554 Message rejected: Sending paused for this account. For more information, please check the inbox of the email address associated with your AWS account. "

I tried creating a new Campaign and New Email with no luck.
I removed anything to do with Amazon local.php with no luck.
I’ve cleared the cache but that didn’t help either.

5

Solved the problem.

Totally my own fault. The cronjobs were pointing to my backup 3.2.5 Mautic installation. :man_facepalming:

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