smtp problem

[z.y]

I installed FC4 as a mail server. Then I used Outlook to test it. The POP3 (incoming email) was passed, however, the outgoing (SMTP, port 25) failed. I got the error message:
The TCP/IP connection was unexpectedly terminated by the server.(server: '192.168.2.214', Error Number 0x800ccc0f).

I checked the server using nmap localhost, I got the following output:
Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2006-03-30 16:36 EST
Interesting ports on mail1.avensys.ca (127.0.0.1):
(The 1652 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
80/tcp open http
110/tcp open pop3
111/tcp open rpcbind
143/tcp open imap
443/tcp open https
993/tcp open imaps
995/tcp open pop3s
3306/tcp open mysql

It seems that smtp port 25 is open.

I also use netstat -tap to get the following result:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 *:imaps *:* LISTEN 1767/xinetd
tcp 0 0 *op3s *:* LISTEN 1767/xinetd
tcp 0 0 *:mysql *:* LISTEN 1870/mysqld
tcp 0 0 *op3 *:* LISTEN 1767/xinetd
tcp 0 0 *:imap *:* LISTEN 1767/xinetd
tcp 0 0 *:sunrpc *:* LISTEN 1554/portmap
tcp 0 0 *:ftp *:* LISTEN 1946/proftpd: (acce
tcp 0 0 192.168.2.214:5335 *:* LISTEN 1720/mDNSResponder
tcp 0 0 192.168.2.214:smtp *:* LISTEN 1937/master
tcp 0 0 *:http *:* LISTEN 1962/httpd
tcp 0 0 *:ssh *:* LISTEN 1759/sshd
tcp 0 0 *:https *:* LISTEN 1962/httpd
tcp 0 144 ::ffff:192.168.2.214:ssh ::ffff:192.168.2.40:4817 ESTABLISHED 2647/0

I saw smtp was listening.
What's wrong with me? Any suggestion?
Thanks a lot.

[till]

Did you get any errors in your mail log?

[z.y]

The mail log in /var/log/maillog likes this:

Mar 30 11:17:09 mail1 postfix/smtpd[10183]: connect from mail1.avensys.ca[127.0.0.1]
Mar 30 11:17:09 mail1 ipop3d[10185]: pop3 service init from 192.168.2.40
Mar 30 11:17:09 mail1 ipop3d[10185]: Mailbox vulnerable - directory /var/spool/mail must have 1777 protection
Mar 30 11:17:09 mail1 ipop3d[10185]: Login user=zyan host=[192.168.2.40] nmsgs=0/0
Mar 30 11:17:09 mail1 ipop3d[10185]: Mailbox vulnerable - directory /var/spool/mail must have 1777 protection
Mar 30 11:17:09 mail1 ipop3d[10185]: Logout user=zyan host=[192.168.2.40] nmsgs=0 ndele=0
Mar 30 11:17:27 mail1 postfix/smtpd[10183]: disconnect from mail1.avensys.ca[127.0.0.1]
Mar 30 11:20:22 mail1 ipop3d[10199]: pop3 service init from 192.168.2.76
Mar 30 11:20:22 mail1 ipop3d[10199]: Mailbox vulnerable - directory /var/spool/mail must have 1777 protection
Mar 30 11:20:22 mail1 ipop3d[10199]: Login user=zyan host=[192.168.2.76] nmsgs=0/0

What does the 'Mailbox vulnerable - directory /var/spool/mail must have 1777 protection' mean?

Thanks.

[falko]

Please run

chmod 1777 /var/spool/mail

However, this does not affect your sending problem. Can you post a log excerpt from when you try to send a mail?

[z.y]

Originally Posted by falko

However, this does not affect your sending problem. Can you post a log excerpt from when you try to send a mail?

I can deliver mail within local machine. For example, use command line:
[root@mail1 ~]# mail paul
the account paul can receive the test mail. I can see this in maillog file:

Mar 23 09:37:15 mail1 postfix/pickup[13761]: 19004290F9B: uid=500 from=<zyan>
Mar 23 09:37:15 mail1 postfix/cleanup[13841]: 19004290F9B: message-id=<20060323143715.19004290F9B@mail1.avensys.ca>
Mar 23 09:37:15 mail1 postfix/qmgr[1945]: 19004290F9B: from=<zyan@mail1.avensys.ca>, size=307, nrcpt=1 (queue active)
Mar 23 09:37:15 mail1 postfix/local[13843]: 19004290F9B: to=<paul@mail1.avensys.ca>, orig_to=<paul>, relay=local, delay=0, status=sent (delivered to mailbox)
Mar 23 09:37:15 mail1 postfix/qmgr[1945]: 19004290F9B: removed

I just found some errors in the /var/log/maillog file, but only occurred from yesterday:
Mar 31 01:38:43 mail1 postfix/qmgr[3015]: 38838290F9B: from=<root@mail1.avensys.ca>, size=295, nrcpt=1 (queue active)
Mar 31 01:38:43 mail1 postfix/smtp[5895]: fatal: unknown service: smtp/tcp
Mar 31 01:38:44 mail1 postfix/qmgr[3015]: warning: premature end-of-input on private/smtp socket while reading input attribute name
Mar 31 01:38:44 mail1 postfix/qmgr[3015]: warning: private/smtp socket: malformed response
Mar 31 01:38:44 mail1 postfix/qmgr[3015]: warning: transport smtp failure -- see a previous warning/fatal/panic logfile record for the problem description
Mar 31 01:38:44 mail1 postfix/master[1937]: warning: process /usr/libexec/postfix/smtp pid 5895 exit status 1
Mar 31 01:38:44 mail1 postfix/master[1937]: warning: /usr/libexec/postfix/smtp: bad command startup -- throttling

How to solve it?

[falko]

Originally Posted by z.y

Mar 31 01:38:43 mail1 postfix/smtp[5895]: fatal: unknown service: smtp/tcp
Mar 31 01:38:44 mail1 postfix/qmgr[3015]: warning: premature end-of-input on private/smtp socket while reading input attribute name

Please post your /etc/postfix/master.cf and the output of

grep -i smtp /etc/services

[z.y]

Originally Posted by falko

Please post your /etc/postfix/master.cf and the output of

grep -i smtp /etc/services

This is the output:

[root@mail1 ~]# grep -i smtp /etc/services
smtp 25/tcp mail
smtp 25/udp mail
smtps 465/tcp # SMTP over SSL (TLS).

Bellow is /etc/postfix/master.cf

[root@mail1 postfix]# cat master.cf
#
# Postfix master process configuration file.  For details on the format
# of the file, see the Postfix master(5) manual page.
#
# ==========================================================================
# service type  private unpriv  chroot  wakeup  maxproc command + args
#               (yes)   (yes)   (yes)   (never) (100)
# ==========================================================================
smtp      inet  n       -       y       -       -       smtpd
#submission inet n      -       n       -       -       smtpd
#       -o smtpd_etrn_restrictions=reject
#       -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#smtps    inet  n       -       n       -       -       smtpd
#  -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
#submission   inet    n       -       n       -       -       smtpd
#  -o smtpd_etrn_restrictions=reject
#  -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes
#628      inet  n       -       n       -       -       qmqpd
pickup    fifo  n       -       n       60      1       pickup
cleanup   unix  n       -       n       -       0       cleanup
qmgr      fifo  n       -       n       300     1       qmgr
#qmgr     fifo  n       -       n       300     1       oqmgr
tlsmgr    unix  -       -       n       1000?   1       tlsmgr
rewrite   unix  -       -       n       -       -       trivial-rewrite
bounce    unix  -       -       n       -       0       bounce
defer     unix  -       -       n       -       0       bounce
trace     unix  -       -       n       -       0       bounce
verify    unix  -       -       n       -       1       verify
flush     unix  n       -       n       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
smtp      unix  -       -       y       -       -       smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay     unix  -       -       n       -       -       smtp
        -o fallback_relay=
#       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq     unix  n       -       n       -       -       showq
error     unix  -       -       n       -       -       error
discard   unix  -       -       n       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       n       -       -       lmtp
anvil     unix  -       -       n       -       1       anvil
scache    unix  -       -       n       -       1       scache
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent.  See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop  unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient}
#
# The Cyrus deliver program has changed incompatibly, multiple times.
#
old-cyrus unix  -       n       n       -       -       pipe
  flags=R user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -m ${extension} ${user}
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
cyrus     unix  -       n       n       -       -       pipe
  user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -r ${sender} -m ${extension} ${user}
#
# See the Postfix UUCP_README file for configuration details.
#
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=foo argv=/usr/local/sbin/bsmtp -f $sender $nexthop $recipient
[root@mail1 postfix]#

Thanks again.

[falko]

Looks ok...
What's the output of

ls -la /usr/lib/postfix

?

[z.y]

Originally Posted by falko

Looks ok...
What's the output of

ls -la /usr/lib/postfix

No such file on my machine.
I issued command: find / -name postfix -print
the ouptput:

[root@mail1 ~]# find / -name postfix -print
/usr/share/logwatch/scripts/services/postfix
/usr/sbin/postfix
/usr/libexec/postfix
/etc/postfix
/etc/rc.d/init.d/postfix
/var/spool/postfix
/var/lock/subsys/postfix

Something wrong with my system files?

[falko]

What's the output of

ls -la /usr/libexec/postfix

?