Exact match: &ldquo;abc&rdquo; will match on value &ldquo;abc&rdquo;.
- Prefix match: &ldquo;abc<em>&rdquo; will match on value &ldquo;abc&rdquo; and &ldquo;abcd&rdquo;.
- Suffix match: &ldquo;</em>abc&rdquo; will match on value &ldquo;abc&rdquo; and &ldquo;xabc&rdquo;.
- Presence match: &ldquo;*&rdquo; will match when value is not empty.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Rule-from><td><code>from</code></td><t