Log Message:
Bump smtpfeed version from 1.18 (2002/03) to 1.20 Based on PR pkg/46679
with:
+LICENSE=     original-bsd
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 1.20: Aug.21,2003:
         smtp.c, common.h:
                 fix on duplicate mailing.

 1.19: Aug.20,2003:
         configure:
                 SunOS 5.9 support from Toshio Hiraga <Toshio.Hiraga at \ 
jp.sony.com>
         main.c, smtp.c:
                 reuse connection even when all recipients are invalid in a
                  transaction. please specify option -u to use this feature.
                  suggested by Koji Kawano <kawano at tailback.co.jp>
         smtp.c:
                 retry on recipients which are not accepted with 452 (too many
                  recipients) problem reported by Kenji Ikeda
                  <ikeda at impress.co.jp>
                 fix on bug to set cnf.rcpts_trans to 1 reported by
                  Koji Kawano <kawano at tailback.co.jp>
                 avoid null pointer access/out of range access of state_tbl[]
                  when unexpected close of SMTP connection reported by
                  Hirokazu MORIKAWA <morikawa at nxhack.tarumi.kobe.jp>
                  also by Masato Minda <minmin at wide.ad.jp>
                 reply code tweaking after . termination of DATA command
                  problem reported by Ken Makimura <macky at astem.or.jp>
         dns.c:
                 do not drop query when got an answer from a NS which does not
                 support recursive query.
         util.c:
                 fix on size for MALLOC reported by Koji Kawano
                 <kawano at tailback.co.jp>
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