Postfix settings issues

[arnaud gaboury]

I am running Fedora 23 server. Among other services, I want to deploy
a mail server with postfix.

1- I registered on my DNS provider a A and MX records:
------------------------------------------------
 mail.thetradinghall.com.    86400    IN    A    212.147.52.214
thetradinghall.com.            86400    IN    MX  10  mail.thetradinghall.com.
-------------------------------------------------

2- tested with dig
-----------------------------------------------------
$ dig mail.thetradinghall.com @ns1.he.net
;; ANSWER SECTION:
mail.thetradinghall.com. 86400    IN    A    212.147.52.214
$ dig thetradinghall.com mx @ns1.he.net
;; ANSWER SECTION:
thetradinghall.com.    86400    IN    MX    10 mail.thetradinghall.com.
--------------------------------------------------------------

3- installed, configured and started postfix.
----------------------------------------------------
poisonivy@poppy ➤➤ ~ % postconf -n
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
compatibility_level = 2
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debug_peer_list = 127.0.0.1, thetradinghall.com,
mail.thetradinghall.com 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
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
inet_protocols = ipv4
mail_owner = postfix
mailbox_size_limit = 0
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
message_size_limit = 0
meta_directory = /etc/postfix
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = thetradinghall.com
myhostname = mail.thetradinghall.com
mynetworks = 192.168.1.0/24, 127.0.0.0/8  <----- Not sure of this line
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix/README_FILES
permit_sasl_authenticated, permit_mynetworks,
reject_unauth_destination
relay_domains = $mydestination
sample_directory = /usr/share/doc/postfix/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
shlib_directory = /usr/lib64/postfix
---------------------------------------------------------------

# postfix check
---------------------------------
/usr/libexec/postfix/post-install: line 554: test: too many arguments
/usr/libexec/postfix/post-install: line 554: test: too many arguments
/usr/libexec/postfix/post-install: line 554: test: too many argument
-----------------------------------------------------------------

$ ip a
--------------------------------------------------------------------
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: host0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP group default qlen 1000
    link/ether 0e:7f:c3:fb:25:b1 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 192.168.1.94/24 brd 192.168.1.255 scope global host0
       valid_lft forever preferred_lft forever
    inet6 fe80::c7f:c3ff:fefb:25b1/64 scope link
       valid_lft forever preferred_lft forever
-----------------------------------------------------------------------

Nothing set in a first step as for TLS./etc/postfix/master.cf is the
original installed one.
No entry in iptables, as until now, I let it permissive :

# iptables -L
----------------------------------------------------------
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
f2b-pam-generic  tcp  --  anywhere             anywhere

Chain FORWARD (policy DROP)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain f2b-pam-generic (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere
-------------------------------------------------------

Now when testing with telent, I don't have the answer expected :
220 mail.thetradinghall.com ESMTP Postfix

$ telnet mail.thetradinghall.com 25
Trying 212.147.52.214...
Connected to mail.thetradinghall.com.
Escape character is '^]'.
-------------------------------------------------

I must have misconfigured something, but I have no idea what. After
lots of reading, it seems to me the setup is correct.

Thank you for any hint.
-- 

google.com/+arnaudgabourygabx

[Ed Greshko]

On 01/26/16 19:12, arnaud gaboury wrote:
>  $ telnet mail.thetradinghall.com 25
>  Trying 212.147.52.214...
>  Connected to mail.thetradinghall.com.
>  Escape character is '^]'.
>  -------------------------------------------------
>
>  I must have misconfigured something, but I have no idea what. After
>  lots of reading, it seems to me the setup is correct. 
I think you must have gotten it working....

[egreshko@meimei ~]$ host mail.thetradinghall.com
mail.thetradinghall.com has address 212.147.52.214
[egreshko@meimei ~]$ telnet mail.thetradinghall.com 25
Trying 212.147.52.214...
Connected to mail.thetradinghall.com.
Escape character is '^]'.
220 mail.thetradinghall.com ESMTP Postfix
ehlo greshko.com
250-mail.thetradinghall.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 SMTPUTF8

-- 
In reality, some people should stick to running Windows and others should stay away from
computers altogether.

[Tim]

Allegedly, on or about 26 January 2016, arnaud gaboury sent:
>  Now when testing with telent, I don't have the answer expected :
>  220 mail.thetradinghall.com ESMTP Postfix
>  
>  $ telnet mail.thetradinghall.com 25
>  Trying 212.147.52.214...
>  Connected to mail.thetradinghall.com.
>  Escape character is '^]'.  
That's the kind of response I get if I telnet to my mail server, other
than the Escape... and Connected to... lines are in the opposite order.

Just by the by, further up in your message you did:

>  $ dig mail.thetradinghall.com @ns1.he.net 
You'd want to check that you get the same results when not asking a
particular name server, to see what the default name server tells you.
Because that's (the default name server) what's going to get used with
other commands and programs.

-- 
[tim@localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64

Boilerplate:  All mail to my mailbox is automatically deleted, there is
no point trying to privately email me, I only get to see the messages
posted to the mailing list.

Next time your service provider asks you to reboot your equipment, ask
them to reboot theirs, first.