aaP_muikamachi8993 I was trying to create a webmail by introducing a mail server with aaPanel, but I can send and receive on port 25, but I can't send on 465 or 587. What could be the cause?
aaPanel_Kern Hello, it is recommended to use port 25 for this machine. Is ssl installed on the mail server? aaP_muikamachi8993
aaP_muikamachi8993 aaPanel_Kern This Japanese page says 587 port... RoundCube freezes when sending to 465 port. https://www.idcf.jp/rentalserver/support/knowledge/roundcube/install_03.html
aaP_muikamachi8993 aaPanel_Kern I solved it by having my hosting company open port 25 and sending emails from there.