I’m not using Google Apps so unfortunately, the solution doesn’t apply to our issue.
We have already been de-listed as we check at IP Reputation Investigation http://ipremoval.sms.symantec.com/lookup/.
But we still have issues sending email to some domain emails.
This concludes that even Symantec de-lists your IP, it doesn’t apply it to their clients’ system.
Do you agree?
If so, I think the issue really is with Symantec to apply the updates onto their clients’ system.
Any comments on this?