Email email sending not working

1. has email ever worked on server before and after centmin mod install ?
2. have you modified postfix MTA server in anyway since centmin mod install ? if you have, what did you change ?
3. web host ? some web hosts like Vultr block outbound emails until you contact them for ID verification so they will unblock out bound email sending. Other web hosts like speedykvm/incero based block email sending on main server IP.

You'll need to post on the forums with the following info

• Server or VPS details ? XEN, KVM, OpenVZ, VMWare or dedicated server ? OS ? CentOS 6.9 or 7.4 ? 32bit or 64bit ?
• What version of Centmin Mod ? .07 stable or 08 stable or .09 beta01 or another branch version ?
• Was it fresh install or upgrade ?
• Method of install ? Via centmin.sh menu option 1, Git install or curl one liner install as outlined at centminmod.com/download.html ?
  
• How long ago did you install Centmin Mod ?

FYI, centmin mod usually defaults to install postfix MTA server.

 

strange then you should be running postfix and not sendmail

output for

Code (Text):

service postfix status

output for command to check CSF Firewall's whitelisted ports

Code (Text):

egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf

example

Code (Text):

egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf
TCP_IN = "20,21,22,25,53,80,110,143,161,443,465,587,993,995,1110,1186,1194,81,9418,30001:50011"
TCP_OUT = "993,995,465,587,1110,1194,9418,20,21,22,25,53,80,110,113,443,587,993,995"
UDP_IN = "67,68,1110,33434:33534,20,21,53"
UDP_OUT = "67,68,1110,33434:33534,20,21,53,113,123"
TCP6_IN = "20,21,22,25,53,80,110,143,161,443,465,587,993,995,1110,1186,1194,81,9418,30001:50011"
TCP6_OUT = "993,995,465,587,20,21,22,25,53,80,110,113,443,587,993,995"
UDP6_IN = "20,21,53"
UDP6_OUT = "20,21,53,113,123"

wrap outputs in CODE tags

 

might need initial install log to dig deeper

To troubleshoot initial installation, you need to check the initial install log at /root/centminlogs and instructions under Sharing logs and errors heading for using Pastebin.com or Gists to share a sanitised version of the contents of the initial install log. You can see full details at How to troubleshoot Centmin Mod initial install issues

Example list /root/centminlogs files in date ascending order and grep for install.log

Code (Text):

ls -lahrt /root/centminlogs | grep install.log

example output returns install log at /root/centminlogs/centminmod_1.2.3-eva2000.09.001_111016-112321_install.log

Code (Text):

ls -lahrt /root/centminlogs | grep install.log
-rw-r--r--  1 root root 2.2M Oct 11 01:40 centminmod_1.2.3-eva2000.09.001_111016-112321_install.log

in SSH use cat to ouput contents of /root/centminlogs/centminmod_1.2.3-eva2000.09.001_111016-112321_install.log. Clear your SSH client window/buffer so only output is the contents of the file

Code (Text):

cat /root/centminlogs/centminmod_1.2.3-eva2000.09.001_111016-112321_install.log

Then copy and paste into Pastebin.com or Gists entry. If your SSH window scroll buffer isn't that large to get the whole contents of the install log, you can download file manually and copy and paste contents. But makes sure it's sanitised version of the contents of the initial install log as outlined at How to troubleshoot Centmin Mod initial install issues

 

was about to say after vultr unblocks emails, you would need to restart server

 

means postfix might not have been installed ?

with your problems to date, i think initial install might not have been 100%, start a new thread in https://community.centminmod.com/forums/install-upgrades-or-pre-install-questions.8/ with info asked at https://community.centminmod.com/threads/how-to-troubleshoot-centmin-mod-initial-install-issues.102/