Webmail: Mengatasi "Message not sent. Server replied: Connection timed out 110 Can't open SMTP stream."

Jika anda menjumpai error "Message not sent. Server replied: Connection timed out 110 Can't open SMTP stream." maka hal ini disebabkan karena koneksi ke SMTP gagal. Hal ini dapat diatasi dengan cara:

1. Jika anda menggunakan ConfigFirewall maka pastikan SMTP_ALLOWLOCAL=1, sbb:
   # Block outgoing SMTP except for root, exim and mailman (forces scripts/users
   # to use the exim/sendmail binary instead of sockets access). This replaces the
   # protection as WHM > Tweak Settings > SMTP Tweaks
   #
   # This option uses the iptables ipt_owner/xt_owner module and must be loaded
   # for it to work. It may not be available on some VPS platforms
   #
   # Note: Run /etc/csf/csftest.pl to check whether this option will function on
   # this server
   SMTP_BLOCK = "1"
   # If SMTP_BLOCK is enabled but you want to allow local connections to port 25
   # on the server (e.g. for webmail or web scripts) then enable this option to
   # allow outgoing SMTP connections to the loopback device
   SMTP_ALLOWLOCAL = "1"
   # This is a comma separated list of the ports to block. You should list all
   # ports that exim is configured to listen on
   SMTP_PORTS = "25"
2. Jika anda menggunakan Sendmail, maka:
   #nano /usr/local/cpanel/base/3rdparty/squirrelmail/config/config.php
   $useSendmail = true;

Selamat mencoba,