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Symantec iCloud - Stop Bounce Backs


I am using Symantec iCloud formally messagelabs to block spam to our organization.  If I add an address to the Anti-Spam Blacklist they get a bounce back.  How do I disable the bounce backs from messagelabs?  I want it to silently drop the mail.

Thank you
1 Solution

This is not possible - a blacklisted address will always result in a 5xx error from MessageLabs, which will generally cause the sending MTA to create a bounceback to the original sender.

Out of interest, why do you not want to send a bounceback?

hyperbyteAuthor Commented:
OK, thank you.  I wanted to blacklist certain addresses but I didn't want the sender to know.
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