smtp on 25 doesn't work...

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#1 Sat, 10/25/2014 - 07:17
easyjet

smtp on 25 doesn't work...

Hiiii there!

I've read several topics about my issue but... no solutions...

and this is:

I've just made a virtual server. Everything works very good: website, webmail, Client on Outlook for incoming messages... everything. The only one thing who doesn't work is the Client on Outlook for outgoing messages... They stay in the "post exit" folder on Outlook.

So I've checked everything about the ports and the 25 is open as smtp so... what doesn't work?

I've also checked which program are using the ports and the 25 is used by "master" and not by "dovecot"... could be that one the issue? What is "master" as program?

Here follow the results lunching # netstat -tulpn : (I've changed "MYIP" to avoid to declare which ports are open on my server. Is it correct to avoid to be exposed?)

# netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 0.0.0.0:110                 0.0.0.0:*                   LISTEN      2878/dovecot
tcp        0      0 127.0.0.1:3310              0.0.0.0:*                   LISTEN      2685/clamd
tcp        0      0 0.0.0.0:143                 0.0.0.0:*                   LISTEN      2878/dovecot
tcp        0      0 0.0.0.0:10000               0.0.0.0:*                   LISTEN      3123/perl
tcp        0      0 MYIP:53            0.0.0.0:*                   LISTEN      2610/named
tcp        0      0 127.0.0.1:53                0.0.0.0:*                   LISTEN      2610/named
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      2668/sshd
tcp        0      0 127.0.0.1:11000             0.0.0.0:*                   LISTEN      3095/lookup-domain-
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      2968/master
tcp        0      0 127.0.0.1:953               0.0.0.0:*                   LISTEN      2610/named
tcp        0      0 0.0.0.0:20000               0.0.0.0:*                   LISTEN      3101/perl
tcp        0      0 0.0.0.0:993                 0.0.0.0:*                   LISTEN      2878/dovecot
tcp        0      0 0.0.0.0:995                 0.0.0.0:*                   LISTEN      2878/dovecot
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      2855/mysqld
tcp        0      0 0.0.0.0:587                 0.0.0.0:*                   LISTEN      2968/master
tcp        0      0 :::110                      :::*                        LISTEN      2878/dovecot
tcp        0      0 :::143                      :::*                        LISTEN      2878/dovecot
tcp        0      0 :::80                       :::*                        LISTEN      2988/httpd
tcp        0      0 :::21                       :::*                        LISTEN      2981/proftpd
tcp        0      0 :::53                       :::*                        LISTEN      2610/named
tcp        0      0 :::22                       :::*                        LISTEN      2668/sshd
tcp        0      0 :::25                       :::*                        LISTEN      2968/master
tcp        0      0 ::1:953                     :::*                        LISTEN      2610/named
tcp        0      0 :::443                      :::*                        LISTEN      2988/httpd
tcp        0      0 :::993                      :::*                        LISTEN      2878/dovecot
tcp        0      0 :::995                      :::*                        LISTEN      2878/dovecot
tcp        0      0 :::587                      :::*                        LISTEN      2968/master
udp        0      0 0.0.0.0:783                 0.0.0.0:*                               2564/portreserve
udp        0      0 0.0.0.0:20000               0.0.0.0:*                               3101/perl
udp        0      0 0.0.0.0:10000               0.0.0.0:*                               3123/perl
udp        0      0 MYIP:53            0.0.0.0:*                               2610/named
udp        0      0 127.0.0.1:53                0.0.0.0:*                               2610/named
udp        0      0 :::53                       :::*                                    2610/named

What should I do in your opinion? Maybe allow even the udp protocol for the port 25? Or should I change the program who is using the port from "master" (which I've no clue for what it's used by the system) to "dovecot"?

Thaaaaaaaaanks!

Mon, 10/27/2014 - 09:27
andreychek

Howdy,

It looks like Postfix is running on your server. The program "master" is part of Postfix.

What port is Outlook configured to connect to, is it port 25, or another port?

When sending a message to your server, you may want to look in the email logs to see if any errors show up, or even if there's a connection attempt at all. Those are available in /var/log/maillog, or /var/log/mail.log, depending on your distro.

-Eric

Mon, 10/27/2014 - 09:43
easyjet

Hoiiiiiiiiiiiiiii mmmaaaaan!

I've solved it:

just changing on Outlook the door 587 instead the 25.

Fixed!

I hope it will be useful for other people cause I saw several topics with no so easy solution. That's it!

Thank Youuuuuu byeeeeeeeeeeeee

Mon, 11/03/2014 - 13:45
remibruggeman

have you checked your firewall? If you will not be using port 25, I do not recommend it to be open.

Mon, 11/03/2014 - 15:38
easyjet

it's a very good point! Thanks: I'll close the port!

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