Flag / unflag spam with amavis

Discussion in 'Installation/Configuration' started by tfboy, Jan 13, 2015.

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  1. Victor Dugas

    Victor Dugas Member

    Till, I must apologize for my above cockyness...which was probably the cause of your snootyness...I understand everything you were saying, it just seems...being my expertise is in programming...I have hosted servers eons ago (in the 90s) and the technology has changed in ways someone from my day can barely comprehend. I realize that if I send myself an email and receive it, then pop3 is functioning properly...which as you were attempting to explain...that port 25..the port I use to successfully send email...has to communicate with an email server on the other end at the same port...port 25...if i can use port 25 only asynchronously, then I can communicate out on this port, but not in...
     
    Victor Dugas, Oct 25, 2017
    #41
  2. Victor Dugas

    Victor Dugas Member

    root@webserver:/# netstat -tap | grep smtp
    tcp 0 0 *:smtp *:* LISTEN 27094/master
    tcp6 0 0 [::]:smtp [::]:* LISTEN 27094/master
     
    Victor Dugas, Oct 25, 2017
    #42
  3. till

    till Super Moderator Staff Member ISPConfig Developer

    What you tested with squirrelmail is that port 25 is working fine on the server itself (localhost). This step is important to find out if the issue is on the server or in front of the server (isp / firewall / router). So we know now, that the mail system on your server is working fine as the mail took the full rountrip (port 25 in, mail scanner with amavis and clamav, delivery to the mailbox and fetching with imap).

    The netstat result above shows also that port 25 is open on the external network interface (and not just localhost), so that's fine as well.

    To sum it up, your mail server system is installed correctly and working fine. But the problem remains. So we can limit the problem to something that is between the server and the internet, because neither I nor @Croydon is able to connect to your server on port 25 and I made the test form a mail system in a datacenter, so there is no problem on my side of the conection.

    Here are the next steps:

    1) If you like to try it out yourself what we did to test your server, run this:

    telnet localhost 25

    you should receive a mail prompt then (if telnet command is not installed, install it with apt). You can leave that prompt with the word 'quit'. You can replace the word localhost with the internal server IP though. I'm quite sure that this will work as squirrelmail will have failed otherwise.

    2) If 1) works, then the problem is that this works from your server but not from outside, here the possible reasons again:

    2.1) A firewall on the server that blocks port 25, check that with:

    iptables -L

    2.2) A router in front of the server where you did not forward port 25 (outside) to port 25 (on the server).
    2.3) A firewall or other system at your ISP which blocks port 25 incoming.
     
    till, Oct 25, 2017
    #43
  4. Victor Dugas

    Victor Dugas Member

    right i know how to use telnet...that was around in my day :p...I will check the firewall as you suggest...and yes, when I connect to 25 through telnet, i have no problem, but as you mentioned, that is only one direction.
     
    Victor Dugas, Oct 25, 2017
    #44
  5. Victor Dugas

    Victor Dugas Member

    interesting...now i feel like a knob...the issue is now resolved rofl...while testing...i blocked incoming port 25 on my router...i just unblocked it and im receiving email now duhh...thanks for your patience...you and your friend.
     
    Victor Dugas, Oct 25, 2017
    #45
    till likes this.
  6. Victor Dugas

    Victor Dugas Member

    im only going to be 51 in a week...interesting how the brain doesnt operate as well even only at this age :p
     
    Victor Dugas, Oct 25, 2017
    #46
  7. Victor Dugas

    Victor Dugas Member

    now im getting a flood of email...all of the email that I wasnt getting before...meh...
     
    Victor Dugas, Oct 25, 2017
    #47
  8. till

    till Super Moderator Staff Member ISPConfig Developer

    Good that the issue is resolved now :)
     
    till, Oct 25, 2017
    #48
  9. Victor Dugas

    Victor Dugas Member

    thanks again...and hopefully if i contact you again, it will not be something I did...
     
    Victor Dugas, Oct 25, 2017
    #49
  10. Victor Dugas

    Victor Dugas Member

    rofl i attempted to respond to the email you sent me Till...but it bounced :eek:
     
    Victor Dugas, Oct 25, 2017
    #50
  11. Victor Dugas

    Victor Dugas Member

    hmm all the emails im sending now are bouncing...
     
    Victor Dugas, Oct 25, 2017
    #51
  12. Victor Dugas

    Victor Dugas Member

    please tell me if this says anything to you:
     

    Attached Files:

    Victor Dugas, Oct 25, 2017
    #52
  13. Victor Dugas

    Victor Dugas Member

    ok I see what the issue is, but how to fix it. squirrelmail is sending email that the receiving servers are identifying as spam...as noticed by the email I sent to my wife's hotmail account and my friends email account...hotmail identified its antispam software as spamhaus...etc...meh problems...
     
    Victor Dugas, Oct 25, 2017
    #53
  14. till

    till Super Moderator Staff Member ISPConfig Developer

    Ensure that the external IP address of your server has a valid reverse DNS record that points to the hostname of your server. This record has probably to be set by your business line provider. Beside that, you might add an SPF record in your domain and you should check if your IP address is on any MX blacklists.
     
    till, Oct 26, 2017
    #54
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