I install a wordpress in my site the mailpoet show some error mail function not work

Posted October 27, 2014 2.2k views

HI how to solve this problem.
I installed postfix & sendmail

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You can’t install both postfix and sendmail – they’ll conflict with each other. I would recommend keeping Postfix and uninstall Sendmail:

sudo apt-get purge sendmail
sudo apt-get install postfix --reinstall

Are you able to access port 25 on remote servers? What’s the output of:

nc -vz 25