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@@ -24,10 +24,10 @@ smtp, smtpd \- mail transport
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.PP
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.B upas/smtpd
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[
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-.B -adfrg
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+.B -adDfrg
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][
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-.B -n
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-.I netdir
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+.B -c
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+.I certfile
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][
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.B -h
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.I mydom
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@@ -35,11 +35,10 @@ smtp, smtpd \- mail transport
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.B -k
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.I evilipaddr
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][
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-.B -c
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-.I certfile
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+.B -n
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+.I netdir
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]
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.SH DESCRIPTION
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-.PP
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.I Smtp
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sends the mail message from standard input
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to the users
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@@ -103,11 +102,24 @@ protocols is supported; authenticated connections are permitted to relay.
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.PP
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The options are:
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.TP
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+.B -a
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+requires that all clients authenticate to be able to send mail.
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+.TP
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+.B -c
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+specifies a certificate to use for TLS. Without this
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+option, the capability to start TLS will not be advertised.
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+.TP
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.B -d
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turns on debugging output to standard error.
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.TP
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-.B -r
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-turns on forward DNS validation of non-trusted sender address.
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+.B -D
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+sleeps for 15 seconds at the start of the SMTP dialogue;
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+this deters some spammers.
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+.TP
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+.B -f
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+prevents relaying from non-trusted networks.
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+It also tags messages from non-trusted sites when they deliver mail
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+from an address in a domain we believe we represent.
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.TP
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.B -g
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turns on grey/white list processing. All mail is rejected (with a
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@@ -127,24 +139,10 @@ not, the file is created and the mail is rejected with a `try again'
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code. The expectation is that spammers will not retry and that others
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will.
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.TP
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-.B -f
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-prevents relaying from non-trusted networks.
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-It also tags messages from non-trusted sites when they deliver mail
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-from an address in a domain we believe we represent.
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-.TP
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-.B -n
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-specifies the name of the network directory assigned to the incoming connection.
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-This is used to determine the peer IP address. If this flag is not
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-specified, the peer address is determined using standard input.
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-.TP
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.B -h
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specifies the receiving domain. If this flag is not specified, the
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receiving domain is inferred from the host name.
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.TP
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-.B -s
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-causes copies of blocked messages to be saved in a sub-directory of
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-.BR /mail/queue.dump .
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-.TP
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.B -k
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causes connections from the host at
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the IP address,
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@@ -158,12 +156,10 @@ service attacks or broken mailers which continually
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connect. The connections are not logged and the
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remote system is not notified via the protocol.
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.TP
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-.B -c
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-specifies a certificate to use for TLS. Without this
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-option, the capability to start TLS will not be advertised.
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-.TP
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-.B -a
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-requires that all clients authenticate to be able to send mail.
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+.B -n
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+specifies the name of the network directory assigned to the incoming connection.
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+This is used to determine the peer IP address. If this flag is not
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+specified, the peer address is determined using standard input.
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.TP
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.B -p
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permits clients to authenticate using protocols which transfer
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@@ -172,6 +168,13 @@ the password in the clear, e.g.
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protocol. This should only be used if the connection has
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previously encrypted using e.g.
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.IR tlssrv (8).
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+.TP
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+.B -r
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+turns on forward DNS validation of non-trusted sender address.
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+.TP
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+.B -s
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+causes copies of blocked messages to be saved in a sub-directory of
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+.BR /mail/queue.dump .
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.PP
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.I Smtpd
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is normally run by a network listener such as
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David du Colombier