Applicable to:
- Plesk for Linux
Symptoms
Unable to send emails via mail client with the smtp 587 port configured.
-
The
nmaputility shows that the port is closed:# nmap 203.0.113.2 -p587
PORT STATE SERVICE
587/tcp closed submission -
Unable to telnet to the port 587:
# telnet 203.0.113.2 587
Trying 203.0.113.2...
telnet: connect to address 203.0.113.2: Connection refused -
The
netstatutility shows that no service is listening on port 587:# netstat -tunalp | grep 587
Cause
Expected behaviour.
When the option Tools & Settings > Mail Server Settings > Enable SMTP service on port 587 on all IP addresses is disabled, the service is not used and thus port is not opened.
Resolution
If it is required, open port 587 by following the next steps
-
Go to Tools & Settings > Mail Server Settings.
-
Turn on the Enable SMTP service on port 587 on all IP addresses directive and press the OK button.
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