Email Sending via MailJet no longer works since upgrade

halmaclean

Since upgrading, all outbound emails are not getting through. We route through MailJet and this has always worked successfully in the past. Now, we are getting unknown senders appearing in Mailjet (unverified) with curious chars as name and email (not actual email address, just one or two chars

Fetching works a treat... sending is just not happening. Log is showing the following
Mailer Error
Unable to email via SMTP: [mail address here](tls://in-v3.mailjet.com:587/SMTP) 5.7.1 : Relay access denied

Log Date: Thu, Feb 6 2025 15:55 PM IP Address: 172.31.14.188

the thing is, it always did work, and the mailjet relay works with other systems on the same server, and through telnet on the same server. It's only been a problem since the upgrade.

Any help gratefully received!

KevinTheJedi

halmaclean

First you are using a modified install. I would only recommend using core.

Secondly, the error is pretty clear: Relay access denied

You need to reach out to your mail provider to see why.

Cheers.

halmaclean

Thanks Kev - you're right, we use the OSTicketAwesome CSS which I thought would not affect the actual core code. OSTA say to ask you guys for help.... you're suggesting asking Mailjet for help... both of which I have done.

What I see is the mail sending off the same server using other software does not trigger a relay error when we use exactly the same credentials. The 'Sender Addresses' image from the OP is from the Mailjet side... the log message about relay is from the OSTA side.

All I know is it used to work, so if you've got any further suggestions which might help track this one down, I'd appreciate it...

KevinTheJedi

halmaclean

Check the Email Name for all system emails and ensure they don’t contain any special characters.

Cheers.