Hi,
We are receiving bounce back messages from a number of our business partners who appear to be using Symantec cloud.
Server refused mail at END OF DATA - 553-Message filtered. Refer to the Troubleshooting page at 553-http://www.symanteccloud.com/troubleshooting for more 553 information. (#5.7.1)
I have checked our mail server IP addresses on this link but it is reporting no negative reputation. Clearly our IP addresses or domain are being blocked by the service and we would like a resolution for this as soon as possible.
http://ipremoval.sms.symantec.com/lookup/
I have also checked on a number of other sites such as mxtoolbox and there are no issues there. Our Exchange administator has also confirmed that everything is setup correctly on our side.
I do no want to post our domain or IP addresses on a public forum so please give me private message address I can send these to.
I am eagerly awaiting a prompt response for this. :-)