Try something like: 
my $message_id = $1 if $message =~ m/([\w\d]+)\s+.*/;

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If the information in this post is inaccurate, or just plain wrong, don't just downvote - please post explaining what's wrong.
That way everyone learns.

In reply to Re: Applying a regular expression to a string by BazB
in thread Applying a regular expression to a string by mw

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