- Plesk for Linux
The following error message appears when mail is sent in Horde:
PLESK_INFO: Warning: There was an error sending your message: Error connecting to SMTP server.
In Horde log
, the following error can be found:
CONFIG_TEXT: ERR: HORDE [imp] Error connecting to SMTP server.  Connection refused [pid 6716 on line 1160 of "/usr/share/psa-horde/imp/lib/Compose.php"]
SMTP Server (Postfix) is stopped.
1. Connect to the server via SSH .
2. Start the service SMTP Server (Postfix):
# service postfix start