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Old 19th April 2013, 16:46
danhansen@denmark danhansen@denmark is offline
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Exclamation ISPconfig - mailserver problem - check port 25 and mailserver ability to send/receive

Hi,

No need for excuses

I am fighting the mailserver too!

Check that port 25 is open . you need to check it from the outside:


To test "port 25" from the outside:

https://www.grc.com/x/ne.dll?bh0bkyd2

Then hit: "proceed"
Then hit "common ports"
(If you wish to test more than the common ports, hit "All service ports" instead.)

Your stuff will be tested... After the test:

Then hit "Text summary" and you will be able to see if port 25 is open!


Then to test your mailserver SMTP


Goto:
"http://mxtoolbox.com/"

Enter this:
"mx:yourdomain.tld"
or
"mx:youripnumber"

The service will test your servers ability to receive/send mail.. You can read the info and try some other stuff to ..

Your results should look a lttle like this:


--------------------------------------------------------------------------------------------------------------------------------

smtp:xxx.xxx.xxx.xxx Monitor This

smtp

220 server1.yourdomain ESMTP Postfix

SMTP Reverse Banner Check OK - xxx.xxx.xxx.xxx resolves to "some text from your ISP"
SMTP Reverse DNS Mismatch Warning - Reverse DNS does not match SMTP Banner
SMTP TLS Warning - Does not support TLS.
SMTP Connection Time 0.983 seconds - Good on Connection time
SMTP Open Relay OK - Not an open relay.
SMTP Transaction Time 3.541 seconds - Good on Transaction Time
Session Transcript:

220 server1.yourdomain.tld ESMTP Postfix [796 ms]
EHLO please-read-policy.mxtoolbox.com
250-server1.yourdomain.tld
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN [796 ms]
MAIL FROM: <supertool@mxtoolbox.com>
250 2.1.0 Ok [796 ms]
RCPT TO: <test@example.com>
554 5.7.1 <test@example.com>: Relay access denied [796 ms]
QUIT

SendSMTPCommand: You hung up on us after we connected. Please whitelist us. (connection lost)

--------------------------------------------------------------------------------------------------------------------------------
The warnings are to be looked at at a later time when your main issue has been solved..

and the other test the result should look like this:

--------------------------------------------------------------------------------------------------------------------------------

GRC Port Authority Report created on UTC: 2013-04-19 at 14:37:05

Results from scan of ports: 0, 21-23, 25, 79, 80, 110, 113,
119, 135, 139, 143, 389, 443, 445,
1002, 1024-1030, 1720, 5000

7 Ports Open
19 Ports Closed
0 Ports Stealth
---------------------
26 Ports Tested

NO PORTS were found to be STEALTH.

Ports found to be OPEN were: 21, 22, 25, 80, 110, 143, 443

Other than what is listed above, all ports are CLOSED.

TruStealth: FAILED - NOT all tested ports were STEALTH,
- NO unsolicited packets were received,
- A PING REPLY (ICMP Echo) WAS RECEIVED.

--------------------------------------------------------------------------------------------------------------------------------

Let's see how far this will take you


Kind Regards,
Dan

Last edited by danhansen@denmark; 19th April 2013 at 16:50. Reason: Just not satisfied with the looks :)
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