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postfix mail configuration
https://forum.linode.com/viewtopic.php?f=11&t=6325		 Page 1 of 2
Author:  lilmike [ Fri Nov 26, 2010 3:28 am ]
Post subject:  postfix mail configuration
Hi,
I was trying to follow the linode library article on how to install postfix to use for mail, and now i have some strange errors.
It doesn't seem like the mail is being delivered, for when I do the mailx sales@example.com (replacing that with my actual email account, of course), it has some errors in the /var/log/mail.log (at least it looks like errors), and no /home/vmail/dovecot-deliver.log
Some of the seemingly looking errors from /var/log/mail.log are below:
Nov 26 01:24:13 mtgames postfix/cleanup[16332]: 600B3627B0: message-id=<20101126072413.600B3627B0@mtgames.org>
Nov 26 01:24:13 mtgames postfix/bounce[16337]: 44720627AF: sender non-delivery notification: 600B3627B0
Nov 26 01:24:13 mtgames postfix/qmgr[15599]: 600B3627B0: from=<>, size=1950, nrcpt=1 (queue active)
Nov 26 01:24:13 mtgames postfix/trivial-rewrite[16335]: warning: do not list domain mtgames.org in BOTH mydestination and virtual_mailbox_domains
Nov 26 01:24:13 mtgames postfix/qmgr[15599]: 44720627AF: removed
Nov 26 01:24:13 mtgames postfix/trivial-rewrite[16335]: warning: do not list domain mtgames.org in BOTH mydestination and virtual_mailbox_domains
Nov 26 01:24:13 mtgames postfix/trivial-rewrite[16335]: last message repeated 24 times
Nov 26 01:24:13 mtgames postfix/local[16336]: warning: alias database loop for postmaster
Nov 26 01:24:13 mtgames postfix/local[16336]: 600B3627B0: to=<postmaster@mtgames.org>, orig_to=<root@mtgames.org>, relay=local,
delay=0.02, delays=0/0/0/0.02, dsn=5.4.6, status=bounced (alias database loop for postmaster)
Nov 26 01:24:13 mtgames postfix/qmgr[15599]: 600B3627B0: removed

I hope someone here can help me with this matter.
Thanks,
-Michael.
Author:  lilmike [ Sat Nov 27, 2010 3:25 pm ]
Post subject: 
Hi,
Just was wondering if anyone had seen this topic, and if so, if anyone had any ideas.
-Michael.
Author:  pclissold [ Sat Nov 27, 2010 3:53 pm ]
Post subject: 
Code:
Nov 26 01:24:13 mtgames postfix/trivial-rewrite[16335]: warning: do not list domain mtgames.org in BOTH mydestination and virtual_mailbox_domains
Nov 26 01:24:13 mtgames postfix/trivial-rewrite[16335]: last message repeated 24 times

First thing to do is fix this.
Author:  lilmike [ Sat Nov 27, 2010 11:51 pm ]
Post subject: 
Hi,
I seem to have fixed that particular problem, by removing mtgames.org from the domains table.
However, now I have a user webmaster@mtgames.org in the users table, but when I send an email to it, it bounces.
Anyone know why, even though I have the mtgames.org domain as my domain that you set up in the original configuration, it won't except the mail?
Also, I still have the errors about database loop for postmaster.
Thanks for any help,
-Michael.
Author:  otherbbs [ Sun Nov 28, 2010 5:22 pm ]
Post subject: 
lilmike wrote:
Anyone know why, even though I have the mtgames.org domain as my domain that you set up in the original configuration, it won't except the mail?

Michael, I just tried both webmaster and postmaster @mtgames.org and I did not get any errors. If it still isn't working as expected, take a look at your logs or turn up the level of logging to see what is going on.

Also, one of your MX records for mtgames does not have an A record.

--
Travis
Author:  lilmike [ Mon Nov 29, 2010 7:17 pm ]
Post subject: 
Hi,
I got the email (kind of) working, but I've got a few problems here.
When I send email to webmaster@mtgames.org, support@mtgames.org, or email@mtgames.org, postfix returns it undeliverable.
Also, it doesn't seem that postfix opens up the default smtps port, as i tried setting my smtp port to 465, because it said that it won't accept cleartext over a non-ssl connection, but now it says connection to the server failed.
I tried using a nmap port scan on my linode, and indeed, 465 is not open.
I checked the sql table, and all the information seems to be there, it's just not getting to my email, like webmaster@mtgames.org, email@mtgames.org, and support@mtgames.org. All my other email addresses receive email fine, but just don't send email.
Hope someone can help me with this.
Thanks,
-Michael.
Author:  pclissold [ Tue Nov 30, 2010 3:14 am ]
Post subject: 
Check that the SMTPS line is not commented out in /etc/postfix/master.cf - remove the #.
Code:
#smtps     inet  n       -       -       -       -       smtpd
Author:  Stever [ Tue Nov 30, 2010 9:02 am ]
Post subject: 
pclissold wrote:
Check that the SMTPS line is not commented out in /etc/postfix/master.cf - remove the #.
Code:
#smtps     inet  n       -       -       -       -       smtpd

Don't forget to uncomment the "-o" lines immediately after the smtps line either:
Code:
#smtps     inet  n       -       n       -       -       smtpd
#  -o smtpd_tls_wrappermode=yes
#  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
#  -o smtpd_peername_lookup=no

(Not sure if those are all from the default config - I may have added some myself)
Author:  pclissold [ Tue Nov 30, 2010 10:39 am ]
Post subject: 
Whoops -- Stever is right -- it was too early in the morning here to be answering postfix questions. Only smtpd_peername_lookup=no is non-standard.
Author:  lilmike [ Tue Nov 30, 2010 4:46 pm ]
Post subject: 
Hi,
I uncommented the lines, did a service postfix reload, and did a nmap port scan -- 465 is now open.
I have to wait until I get home to see if it works, but it seems to be fine so far.
Now I am trying to install squirrel mail on my linode for webmail, and i just have one error:
When I go to log in, it logs in fine, but it gives me this error in the left pain:
ERROR:
ERROR: Could not complete request.
Query: CREATE "Sent"
Reason Given: Unknown namespace.

I'm not sure if I should create a new topic for this, but I figured I'd post here to see if anyone knows.
Thanks,
-Michael.
Author:  lilmike [ Wed Dec 01, 2010 1:09 am ]
Post subject: 
Hi, my mail seems to be thoroughly broken.
I tried sending to webmaster@mtgames.org, webmaster@ai5hf.org, and many others with my hotmail account, and all got returned by hotmail, as if the mail server didn't even exist (at least that's what I think it looks like).
The reason I think this is because before, when I tried sending to something that didn't exist, it would say something like this is the mtgames mail server, that email address could not be delivered to.
It also won't let me send email over smtps, or smtp. I tried using clear text on smtp, and it said that is not available over a non-secured connection. So i tried a secure connection, and it said that the connection to the server has failed. I did a port scan of my system, and it sure seems like port 465 is open.
Can anyone else try sending email to webmaster@mtgames.org and see what happens?
Also (and this is odd), my squirrel mail can send emails from those accounts just fine.
This is all very strange.
Hope someone can help me with this matter.
Thanks,
-Michael.

P.S. Is there some kind of setting that would stop outside senders from sending email and just let senders from 127.0.0.1 in?
Author:  Vance [ Wed Dec 01, 2010 3:55 am ]
Post subject: 
Code:
$ dig mtgames.org mx

; <<>> DiG 9.3.2 <<>> mtgames.org mx
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59423
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;mtgames.org.                   IN      MX

;; ANSWER SECTION:
mtgames.org.            3600    IN      MX      10 mtgames.org.

;; ADDITIONAL SECTION:
mtgames.org.            3600    IN      A       72.14.189.72

;; Query time: 341 msec
;; SERVER: 205.133.7.2#53(205.133.7.2)
;; WHEN: Wed Dec  1 01:43:23 2010
;; MSG SIZE  rcvd: 61


This looks OK.

Code:
$ telnet mtgames.org 25
Trying 72.14.189.72...
telnet: connect to address 72.14.189.72: Connection timed out
telnet: Unable to connect to remote host: Connection timed out


But your SMTP server is not reachable from here - either it's not listening on a public interface, or you have a firewall blocking connections to it.
Author:  lilmike [ Wed Dec 01, 2010 4:41 am ]
Post subject: 
Well, I seem to have found something interesting.
I tried installing something, and it apparently decided it would like to overright lots of my postfix configuration files, and not dovecot, and not postfix/sasl/smtpd.conf, just so it could try and work, but still fail. heh.
Anyway, I've tried to fix all the places it messed up in trying to figure things out, and i think I've got most of them.
The only thing now is:
I tried connecting to send mail with an account that has been failing to send mail for a while, and I check the logs imeediately, and got this:
Dec1 02:23:25 mtgames postfix/smtpd[15396]: connect from ip72-219-42-29.br.br.cox.net[72.219.42.29]
Dec1 02:23:25 mtgames postfix/smtpd[15396]: setting up TLS connection from ip72-219-42-29.br.br.cox.net[72.219.42.29]
Dec1 02:23:25 mtgames postfix/smtpd[15396]: Anonymous TLS connection established from ip72-219-42-29.br.br.cox.net[72.219.42.29]: TLSv1 with cipher RC4-MD5 (128/128 bits)
Dec1 02:23:25 mtgames postfix/smtpd[15396]: warning: SASL: Connect to private/dovecot-auth failed: No such file or directory
Dec1 02:23:25 mtgames postfix/smtpd[15396]: fatal: no SASL authentication mechanisms
Dec1 02:23:26 mtgames postfix/master[14761]: warning: process /usr/lib/postfix/smtpd pid 15396 exit status 1
Dec1 02:23:26 mtgames postfix/master[14761]: warning: /usr/lib/postfix/smtpd: bad command startup -- throttling
and I get this with a netstat command (with some other switches):
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 14761/master
And this:
tcp 0 0 0.0.0.0:465 0.0.0.0:* LISTEN 14761/master
I can't see anything in iptables that would say that it was blocking ports 25 or 465, either.
Hope someone can help me with this matter.
-Michael.
Author:  Stever [ Wed Dec 01, 2010 9:44 am ]
Post subject: 
lilmike wrote:
Dec1 02:23:25 mtgames postfix/smtpd[15396]: warning: SASL: Connect to private/dovecot-auth failed: No such file or directory
Dec1 02:23:25 mtgames postfix/smtpd[15396]: fatal: no SASL authentication mechanisms


You either haven't set up dovecot auth, or you have it's socket in a different place than postfix expects to find it.

In postfix's main.cf, look for "smtpd_sasl_path", and make sure it points to the same location as what is in dovecot.conf.

For example (not that yours has to match this, but your two paths need to meet):
main.cf wrote:
#
# Dovecot SASL
#
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth


dovecot.conf wrote:
auth default {
...
socket listen {
...
client {
path = /var/spool/postfix/private/auth
mode = 0660
user = postfix
group = postfix
Author:  lilmike [ Wed Dec 01, 2010 1:19 pm ]
Post subject: 
Hi,
Ok, that seems to have been (at least) part of the problem.
I changed the line in /etc/postfix/main.cf to private/auth, instead of private/dovecot-auth.
Now, telneting to mtgames.org 25 seems to work.
Yet, there is still one last problem it seems (there may be more, but I'm not at home to test sending emial yet):
When you telnet mtgames.org 465, it connects, but just sits there.
Now, looking in the logs, it seems there is yet another problem:
Dec1 11:13:07 mtgames postfix/smtpd[1645]: connect from li59-247.members.linode.com[97.107.129.247]
Dec1 11:13:07 mtgames postfix/smtpd[1645]: setting up TLS connection from li59-247.members.linode.com[97.107.129.247]
Dec1 11:13:22 mtgames postfix/smtpd[1645]: SSL_accept error from li59-247.members.linode.com[97.107.129.247]: -1
Dec1 11:13:22 mtgames postfix/smtpd[1645]: warning: TLS library problem: 1645: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:578:
Dec1 11:13:22 mtgames postfix/smtpd[1645]: lost connection after CONNECT from li59-247.members.linode.com[97.107.129.247]
Dec1 11:13:22 mtgames postfix/smtpd[1645]: disconnect from li59-247.members.linode.com[97.107.129.247]
Thanks for any help,
-Michael.
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