As many other people on this forum we are having troubles delivering mail to our customers that are using Symantec cloud services, since all our messages (sent by Office365) are rejected with the same reason:
Remote Server returned '554 5.0.0 <server-26.tower-239.messagelabs.com #5.0.350 smtp;550 5.0.350 Remote server returned an error -> 553 Message filtered. Refer to the Troubleshooting page at;http://www.symanteccloud.com/troubleshooting for more;information. (#5.7.1)>'
We have tried to send a sample message to investigation@review.symantec.com, as suggested by technical articles (like https://support.symantec.com/en_US/article.TECH250...) and by some Symantec fanboy on this forum, but the result is ironically:
Remote Server returned '554 5.1.2 < #5.1.2 smtp; 554 5.1.2 Recipient address rejected: User unknown>'
This is really annoying, is there anyone from Symantec who can do something about it or is this forum left on his own ?
