Mike Kellenberger wrote:

> Hi
> We are seeing problems with greylisting in mails coming from UPC
> mailservers. After receiving our "451 Greylisting" response, we never
> see a retry of the mail again. The sender does not receive an NDR. We
> have seen this behaviour from the servers at 84.116.36.xxx. Other
> servers for example the ones in the range 62.179.121.xxx are retrying
> correctly.
> Anybody from UPC here to help sort this out or is anyone else seeing
> the same problem or is no one using greylisting anymore these days?

Is there any point in greylisting genuine mailservers?  We only greylist
dodgy-looking setups. 


Per Jessen, Zürich (1.2°C)
http://www.dns24.ch/ - your free DNS host, made in Switzerland.

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