From: Duane Hill (d.hillyournetplus.com)
Date: Tue May 29 2007 - 15:22:16 CDT

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On Tue, 29 May 2007, mouss wrote:

> - if it contains junk characters, then it is invalid both in terms of the RFC
> and in terms of common use.
> - you can also reject negative numbers: /^-\d+$/. These are invalid and were
> never reported in legitimate mail. seems like abroken ratware.
> - you can also reject numeric helos: /^\d+$/. They are invalid, and there
> doesn't seem to be a lot of legitimate broken sites using these.

Doesn't reject_invalid_helo_hostname take care of these invalid helo's? In
testing, I can't helo as a negative or positive number with the option.
I'm not sure as I can't find the detail of what an invalid_helo_hostname
entails.

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