Hi everyone I installed ISPConfig3 on ubuntu 24 with automatic script. I can operate with everything, even use thunderbird to download email. When i try to send new email or receive i got 2 different messages: 1 - email doesn't exist 2 - temporary lookup failure I create a domain different from the server name, put dkim dmarc and so on I checked DNS in resolv systemctl and spool and when i try nslookup work fine, in log NO evidence of error. My server is situated in a datacenter with NAT, but web and other things work fine, checked log of gateway and no sign of traffic Any clue?
Not much. More information needed. Start with this: https://forum.howtoforge.com/threads/please-read-before-posting.58408/ What command line arguments did you use for the automatic script? Please provide complete error messages and and log lines. Check your DNS for example with https://intodns.com/ Check your e-mail setup with this: https://mxtoolbox.com/ My signature has link to e-mail setup tutorial. There is this fine document instructing how to create e-mail account. https://www.howtoforge.com/ispconfig-email-account/
Hi , yes you right, is not the fisrt time i implement ISPConfig3 with previous version of Ubuntu and never had this issue script used: wget -O - https://get.ispconfig.org | sh -s -- --use-ftp-ports=40110-40210 --unattended-upgrades OS: ubuntu 24 log: ISPC queue log: -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- E037560D14* 629 Fri Nov 22 10:13:35 [email protected] [email protected] EE665624C9 624 Fri Nov 22 10:37:45 [email protected] (connect to centurialabs.org[x.x.x.x]:25: Connection timed out) [email protected] (connect to alt2.gmail-smtp-in.l.google.com[74.125.200.26]:25: Connection timed out) [email protected] Both domain i can reach from the ISPConfig server, checked already MAIL LOG: Temporary lookup failure; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<cloudserver3185849-3185880.home.pl>
Does your server have public IP address routable in the Internet? Or have you setup forwarding or proxy to the server behind NAT? Is port 25 open both ways?
That's not the case. Port 25 outgoing is closed; otherwise you would not have received these two errors: EE665624C9 624 Fri Nov 22 10:37:45 [email protected] (connect to centurialabs.org[x.x.x.x]:25: Connection timed out) [email protected] (connect to alt2.gmail-smtp-in.l.google.com[74.125.200.26]:25: Connection timed out) [email protected]
You can test it with telnet. Run apt install telnet, and then: Code: root@server:~# telnet 74.125.200.26 25 Trying 74.125.200.26... Connected to 74.125.200.26. Escape character is '^]'. 220 mx.google.com ESMTP 41be03b00d2f7-7fbd74cc42dsi757220a12.695 - gsmtp quit If you do not get the connect output from Google, then port 25 is closed.
I think i see the problem. UFW was disabled but block port 25 out That's strange and my bad i was assuming once disabled work fine, i will work on it and will reply
Well i can confirm was 2 different problem related to firewall and NAT. 1 - ufw even if disabled for some strange reason filtered the port 2 - once tested that and fix, NAT was stuck in some rules. Now everything work fine thanks
