We are receiving filtered bounce back messges when sending to many Message Labs Customers from @lsccom . com (spaces intentionally put in)
I have opened a ticket with Google Support and escalated (our email provider) and they say the messages are being rejected by message labs servers
The response was:
553 Message filtered. Refer to the Troubleshooting page at http://www.symanteccloud.com/troubleshooting for more information. (#5.7.1)
Further in the google logs, I see a common error amongst sending to different domains (all ML customers) --> target="_blank"
Google tried to deliver your message, but it was rejected by the server for the recipient domain <a href="http://gbtpa.com" target="_blank">gbtpa.com</a> by <a href="http://cluster4.us.messagelabs.com" target="_blank">cluster4.us.messagelabs.com</a>. [216.82.251.33]. The error that the other server returned was: 553-Message filtered. Refer to the Troubleshooting page at 553-<a href="http://www.symanteccloud.com/troubleshooting" target="_blank">http://www.symanteccloud.<wbr>com/troubleshooting</a> for more 553 information. (#5.7.1)
I tried to open a ticket with Message Labs, but we aren't a customer and they won't let us.
Problem started around april 10th @ 7:22am CDT. Last good email I can see sent to a domain on ML was April 9th @ 22:02 CDT.
I checked blacklists on lsccom . com and nothing is coming up on blacklist. I even setup DKIM on a test domain of our's and sent a test and it failed, so that theory didn't prove out. I need someone on the ML side to find out why these emails are being filtered. Am I missing something here?
Can anyone help? I am trying to get in contact with an email admin at one of these domains to get ML support on the phone, but this is proving difficult.
Thanks in Advance.
Keith
Thanks.