bijayant kumar wrote: > One thing more that the manpage of addresses(5) says > Do not use ASCII control characters. Avoid spaces and the > characters \"<>()[],;: > I want to ask that are they all be treated as Non-Ascii > characters or any thing else? If you could clarify the > same it will be very helpful.
That looks like a manpage from ezmlm. Anyway, those are recommendations for creating email addresses; according to my interpretation, having those characters in an address isn't prohibited, but may cause problems on some systems. Those characters are all valid ASCII (http://en.wikipedia.org/wiki/ASCII), so the pcre check you are doing will presumably still allow them.
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