Configured a Communication channel in PMM and can successfully send emails but sms texts are not being sent/received. Using tmobile so format is phone#@tmomail.net. Any advice on how to troubleshoot this?
1 Like
Can you send to that email address from your normal email client? If that doesn’t work, then you know the issue is with tmomail and not PMM.
2 Likes
Yes, I can successfully send a message to tmomail.net via Outlook. An alert message to a regular email address (gmail) works as well, just not to sms. I will try using sendmail on the PMM host machine.
2 Likes
I think there are smtp logs in the /srv/logs/alertmanager.log that might give some indication. The best you will see is if the first smtp server accepted/rejected the message so if it was accepted (250 OK) then the issue will be with one of the upstream SMTP transactions. If rejected it could be for a few reasons like DKIM signing, SPF or a few other spam prevention mechanism.
2 Likes
I am seeing the following in the /var/log/mail.log ‘sender rejected AUP#DNS’ This feels like Tmobile is rejecting this based on origin( my PMM host).
1 Like
Yep, could be reverse dns not set or coming from a dynamic range IP address.
I’d recommend you look at relaying mail from the PMM server to your ISPs smtp server (you’ll need to auth to the smtp server and use a from domain that the ISP agrees with). Here’s a blog on how to use O365 or gmail as a more legitimate email relay.
1 Like