VBounce: ensure a known-false return value; match "Received:" only at the beginning of a line, case-insensitively and do not require a space after a colon
VBounce: ensure a known-false return value; match "Received:" only at the beginning of a line, case-insensitively and do not require a space after a colon

git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@644752 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin