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Unable to send emails via mail client with the smtp 587 port configured

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Julian Bonpland Mignaquy
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Plesk for Linux kb: technical ABT: Group B

Applicable to:

  • Plesk for Linux

Symptoms

Unable to send emails via mail client with the smtp 587 port configured.

  • The nmap utility 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 netstat utility 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

  1. Log into Plesk.

  2. Go to Tools & Settings > Mail Server Settings.

  3. Turn on the Enable SMTP service on port 587 on all IP addresses directive and press the OK button.

Comments

2 comments

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  • Avatar
    Naveen Babu

    Unable to send the Mails to other Domain. Getting error as General Failure

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    Comment actions Permalink
  • Avatar
    Nourish Mentor

    I am add all setting in mail server but email not send

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