temp unable to verify logs

Prior to 1.61 temporarily unable to verify sender address (try again
later) did not cause verbose logging to rejectlog. Now it does. I
think this is undesirable, because these messages are often repeated
hundreds of times.

Previously only the one-line warning was written. Now a verbose
description, complete with headers is written. Previously the verbose
message only occured when verify failed totally.

1997-03-14 00:46:45 0w5PoV-0002Kb-00 rejected from mtigwc03.worldnet.att.net [204.127.131.3]: temporarily unable to verify sender address (try again later) <ExchangeCurrency@???>