Pop3 proxy problem (or i dont know)

Support
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1

NethServer release 7.3.1611
pop3 proxy

Good afternoon. I installed the pop3-proxy. There is a problem with sending a letter. Writes a connection error to the SMTP server. Modifications of authorization and other things did not give anything. Ping to server ok. When turn of proxy all is good

2

Hi Alex,
please have a look in the logs, is there anything? Authentication error or something like that.
You can post the log, so I will have a look at it.

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3

Mail server is not my. I can not look for smtp logs.
Error 0x80042109. Can not conect to the smtp server. (ping is good)

4

Sorry but i do not think smtp error depends on pop3 proxy…

Are you sure you can send without proxy?

Ensure to check the My Outgoing Server requires Authentication option under the Outgoing Server tab in More Settings

5

Therefore I write here. I also do not understand why pop3 proxy hinders smtp. I tried all the options with and without authorization. As soon as I disable pop3 proxy mail leaves. When enabled, only pop3 is available. By the way, now I’m just testing. On the server is raised dhcp, web proxy.

6

try to set smtp server connection without SSL or TLS on port 25.

Web proxy settings?

Mail account is personal (gmail, yahoo, etc)?

7

Web proxy with authorization AD, mail is personal (mail server on unix, accounts give IPS). I try to set with and without ssl , tls, auto, port 25 and try other port 5**

8

I honestly never used authenticated mode,
I personally try to put web proxy in transparent mode, enable pop3 proxy, authentication on smtp and port 25.
And see what happens.

Know, however, that I am new to the place. And maybe I have a little “agricultural” advice.
The professionals here are others

9

Please tell us something about the mailclient and the mailprovider.

web proxy shouldn’t block mail-ports

Edit!
Here I found your problem, perhaps it helps.

10

I will try to reinstall system step by step and look for it. ISP say that he dont see any attempts to connect to smtp. Mail client is outlook 2013. Mailprovider is same as ISP (mail server on unix, but dont say what exactly)

11

Can you say me who the ISP is? I want to look for the settings.

12

Astral.ua

13

Hi. I reinstall all system.

  1. DHCP - all good (web and mail)
  2. Web proxy - all good (web and mail)
  3. Web filter - all good (web and mail)
  4. Install pop3 proxy (not on) - not good (web - ok, mail - pop3 ok, smtp -error)
    I dont know, I only install pop3 proxy, dont turn on and have error.
    Web proxy - Transparent with SSL
    Web filter - filter off, antivirus on
    What am I doing wrong?
    I only try to use linux system and my knowledge of Linux is not great. I have basic concepts. I can see the configuration files. If you need something else tell me.

Service

amavisd (Mail virus and antispam scanner) Enabled Running
chronyd (Network Time Protocol) Enabled Running UDP: 123
dnsmasq (DNS and DHCP) Enabled Running TCP: 53 UDP: 53,67,69
httpd (HTTP) Enabled Running TCP: 80,443
httpd-admin (NethServer web interface) Enabled Running TCP: 980
lsm (Link Status Monitor) Disabled Stopped
p3scan Disabled Stopped TCP: 8110
postfix (SMTP) Enabled Running TCP: 25,465,587
rsyslog (System logger) Enabled Running
shorewall (Firewall) Enabled Running
smartd (Self-Monitoring, Analysis and Reporting Technology) Enabled Running
spamassassin Enabled Running TCP: 783
squid (Web proxy) Enabled Running TCP: 3128,3129,3130
sshd (Secure Shell) Enabled Running TCP: 2222
sssd (System Security Services Daemon) Disabled Stopped
ufdb Disabled Stopped
unbound Enabled Running UDP: 10053

I found in the logs when referring to smtp such

May 25 09:38:43 prox kernel: Shorewall:loc2net:REJECT:IN=eth1 OUT=eth0 MAC=****** SRC=**** DST=**** LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=2292 DF PROTO=TCP SPT=49709 DPT=25 WINDOW=8192 RES=0x00 SYN URGP=0
May 25 09:38:44 prox kernel: Shorewall:loc2net:REJECT:IN=eth1 OUT=eth0 MAC=****** SRC=**** DST=**** LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=2293 DF PROTO=TCP SPT=49709 DPT=25 WINDOW=8192 RES=0x00 SYN URGP=0
May 25 09:38:44 prox kernel: Shorewall:loc2net:REJECT:IN=eth1 OUT=eth0 MAC=****** SRC=**** DST=**** LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=2294 DF PROTO=TCP SPT=49709 DPT=25 WINDOW=8192 RES=0x00 SYN URGP=0

I understand that somewhere I need to hurt something, but where?

14

In my case my ISP use not standart port for smtp ssl - 465. Thanks to all for help.
P.S.: I can help with translation on Ukranian language

1 Like
15

Hey, @translations_team will appreciate your help :wink:

16

Hi @Alex.m I’ll add you to the Ukrainian team

Regards

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