[pimmoos]

I am trying to get postfix to work on Fedora core 8. Software installed for mail.
cyrus-sasl
dovecot
postfix
sendmail
sendmail-cf
spamassassin

Used system-switch-mail and made postfix the default mail server. edited the main.cf file to be with the direction of Postfix Mail Server — Fedora Unity Project

.................................................. ....................
#soft_bounce = no

command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix

#default_privs = nobody
#myorigin = $myhostname
#myorigin = $mydomain

inet_interfaces = all

#inet_interfaces = $myhostname
#inet_interfaces = $myhostname, localhost
#proxy_interfaces =
#proxy_interfaces = 1.2.3.4
#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
# mail.$mydomain, www.$mydomain, ftp.$mydomain
#local_recipient_maps = unixasswd.byname $alias_maps
#local_recipient_maps = proxy:unixasswd.byname $alias_maps
#local_recipient_maps =
# default setting is 550 (reject mail) but it is safer to start
#unknown_local_recipient_reject_code = 550
#mynetworks_style = class
#mynetworks_style = subnet

mynetworks_style = host

#mynetworks = 168.100.189.0/28, 127.0.0.0/8
#mynetworks = $config_directory/mynetworks
#mynetworks = hash:/etc/postfix/network_table
#relay_domains = $mydestination
#relay_recipient_maps = hash:/etc/postfix/relay_recipients
#in_flow_delay = 1s
# username->Firstname.Lastname mapping.
#alias_maps = dbm:/etc/aliases

alias_maps = hash:/etc/aliases

#alias_maps = hash:/etc/aliases, nis:mail.aliases
#alias_maps = netinfo:/aliases
#alias_database = dbm:/etc/aliases
#alias_database = dbm:/etc/mail/aliases

alias_database = hash:/etc/aliases

#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
#recipient_delimiter = +
#home_mailbox = Mailbox
#home_mailbox = Maildir/
#mail_spool_directory = /var/mail
#mail_spool_directory = /var/spool/mail
#mailbox_command = /some/where/procmail
#mailbox_command = /some/where/procmail -a "$EXTENSION"
#mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
# mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
# local_destination_recipient_limit = 300
# local_destination_concurrency_limit = 5
#fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp
#fallback_transport =
#luser_relay = $user@other.host
#luser_relay = $local@other.host
#luser_relay = admin+$local
#header_checks = regexp:/etc/postfix/header_checks
#fast_flush_domains = $relay_domains
#smtpd_banner = $myhostname ESMTP $mail_name
#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
#local_destination_concurrency_limit = 2
#default_destination_concurrency_limit = 20

debug_peer_level = 2

#debug_peer_list = 127.0.0.1
#debug_peer_list = some.domain
#debugger_command =
PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
xxgdb $daemon_directory/$process_name $process_id & sleep 5
# debugger_command =
# PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;
# echo where) | gdb $daemon_directory/$process_name $process_id 2>&1
# >$config_directory/$process_name.$process_id.log & sleep 5
# debugger_command =
# PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen
# -dmS $process_name gdb $daemon_directory/$process_name
# $process_id & sleep 1

sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.4.5/samples
readme_directory = /usr/share/doc/postfix-2.4.5/README_FILES
myorigin = mydomain.net
mydestination = mydomain.net
relayhost = smtp.relayhost.net.au

...........................................

telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 host.example.com ESMTP Postfix>

from a remote machine we get the same

telnet 10.0.0.200 25
Trying 10.0.0.200...
Connected to mydomain.net.
Escape character is '^]'.
220 mydomain.net ESMTP Postfix

Port 25 is open I assume as the above telnet.

[rcgreen]

The response is correct. Next you type helo <name of server>

For example.

Connecting to the host.


With this in mind it's very easy to send a basic text email just using telnet which is installed on most computers. First open up a terminal and type the following, of
course replacing mail.yourserver.dk with the address of your SMTP server:

telnet mail.yoursever.dk 25


This should return something like:

telnet mail.yoursever.dk 25
Trying 172.16.0.2...
Connected to mail.yoursever.dk (172.16.0.2).
Escape character is '^]'.
220 cirkeline.yoursever.dk ESMTP Postfix (Debian/GNU)


HELO command.


Next we need to introduce ourselves using the helo command, in reality this can be anything and the mail will still be sent OK (although a false helo command
will result in a spam score from spamassasin for example).

helo mail.localhost
250 mail.yoursever.dk


MAIL FROM command.

Next we type mail from: followed by your email address, if you use a name as well then you need to put angle brackets around you address,
like Bob Peers <email@domain.dk>, but the name is not necessary

mail from:me@domain.dk
250 Ok


RCPT TO command.

Now type rcpt to: followed by who you are sending the mail to, following the same rules as above. Note that this IS NOT the address that appears on the To: line in
your email client or webmail, the two are completely unrelated which is why you can receive spam when your email address is not listed on the To: line.

rcpt to:you@domain.com
250 Ok


DATA command.

Now for the actual mail body, type the word 'data' and press enter:

data
354 End data with <CR><LF>.<CR><LF>


Your SMTP server might not display the extra help here but it simply means that we type our mail body now and to end the input press enter then type a single .
followed by pressing enter again. At this point we can add extra headers if we wish but they are not required. This just shows that the To and From fields are just
part of the message body and have nothing to do with the delivery of the email. However if you do not add them then the message will arrive with
'To: undisclosed-recipients:; in the To field, which again will probably cause your message to be assigned a spam score. If you do decide to add these extra
headers make sure you leave a blank line between them and the 'real' text you wish to appear in the body of the message.

to:Joe Bloggs<you@domain.com>
from: Bob Peers<me@domain.dk>
subject:Telnet test

Hope you are following along OK...
.
250 Ok: queued as 4DDFB180CDA


To actually send the mail we need to quit the telnet session by typing 'quit'.

quit
221 Bye
Connection closed by foreign host.

Sending emails using telnet :: bobpeers.com