Michael Brown wrote:
> The | character is not allowed in any e-mail address because it's a Unix
> shell reserved character.
>
> Here's a list right off the top of my head that are usually
> blocked/disabled by just about every MTA out there.
>
> 1. Control Characters
> 2. Space
> 3. !
> 4. "
> 5. #
> 6. $
> 7. %
> 8. &
> 9. (
> 10. )
> 11. *
> 12. ,
> 13. /
> 14. :
> 15. ;
> 16. <
> 17. >
> 18. @ (when used more than once)
> 19. [
> 20. \
> 21. ]
> 22. |
> 23. DEL
The characters was passed to apopen call, thus to be escaped for a shell.
The application shall quote the following characters if they are to
represent themselves:
| & ; < > ( ) $ ` \ " ' <space> <tab> <newline>
and the following may need to be quoted under certain circumstances.
* ? [ # ˜ = %
It's then up to $SENDMAIL_BIN to reject the address for having an embedded
newline :)
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