1SMTP-SOURCE(1) General Commands Manual SMTP-SOURCE(1)
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6 smtp-source - multi-threaded SMTP/LMTP test generator
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9 smtp-source [options] [inet:]host[:port]
10 smtp-source [options] unix:pathname
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14 smtp-source connects to the named host and TCP port (default: port 25)
15 and sends one or more messages to it, either sequentially or in paral‐
16 lel. The program speaks either SMTP (default) or LMTP. Connections can
17 be made to UNIX-domain and IPv4 or IPv6 servers. IPv4 and IPv6 are the
18 default.
19 Note: this is an unsupported test program. No attempt is made to main‐
21 tain compatibility between successive versions.
22 Arguments:
24 -4 Connect to the server with IPv4. This option has no effect when
26 Postfix is built without IPv6 support.
27 -6 Connect to the server with IPv6. This option is not available
29 when Postfix is built without IPv6 support.
30 -A Don't abort when the server sends something other than the
32 expected positive reply code.
33 -c Display a running counter that is incremented each time an SMTP
35 DATA command completes.
36 -C count
38 When a host sends RESET instead of SYN|ACK, try count times
39 before giving up. The default count is 1. Specify a larger count
40 in order to work around a problem with TCP/IP stacks that send
41 RESET when the listen queue is full.
42 -d Don't disconnect after sending a message; send the next message
44 over the same connection.
45 -f from
47 Use the specified sender address (default: <foo@myhostname>).
48 -F file
50 Send the pre-formatted message header and body in the specified
51 file, while prepending '.' before lines that begin with '.', and
52 while appending CRLF after each line.
53 -l length
55 Send length bytes as message payload. The length does not
56 include message headers.
57 -L Speak LMTP rather than SMTP.
59 -m message_count
61 Send the specified number of messages (default: 1).
62 -M myhostname
64 Use the specified hostname or [address] in the HELO command and
65 in the default sender and recipient addresses, instead of the
66 machine hostname.
67 -N Prepend a non-repeating sequence number to each recipient
69 address. This avoids the artificial 100% hit rate in the resolve
70 and rewrite client caches and exercises the trivial-rewrite dae‐
71 mon, better approximating Postfix performance under real-life
72 work-loads.
73 -o Old mode: don't send HELO, and don't send message headers.
75 -r recipient_count
77 Send the specified number of recipients per transaction
78 (default: 1). Recipient names are generated by prepending a
79 number to the recipient address.
80 -R interval
82 Wait for a random period of time 0 <= n <= interval between mes‐
83 sages. Suspending one thread does not affect other delivery
84 threads.
85 -s session_count
87 Run the specified number of SMTP sessions in parallel (default:
88 1).
89 -S subject
91 Send mail with the named subject line (default: none).
92 -t to Use the specified recipient address (default: <foo@myhostname>).
94 -T windowsize
96 Override the default TCP window size. To work around broken TCP
97 window scaling implementations, specify a value > 0 and < 65536.
98 -v Make the program more verbose, for debugging purposes.
100 -w interval
102 Wait a fixed time between messages. Suspending one thread does
103 not affect other delivery threads.
104 [inet:]host[:port]
106 Connect via TCP to host host, port port. The default port is
107 smtp.
108 unix:pathname
110 Connect to the UNIX-domain socket at pathname.
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113 No SMTP command pipelining support.
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116 smtp-sink(1), SMTP/LMTP message dump
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119 The Secure Mailer license must be distributed with this software.
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122 Wietse Venema
123 IBM T.J. Watson Research
124 P.O. Box 704
125 Yorktown Heights, NY 10598, USA
126 SMTP-SOURCE(1)