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Server: Apache
System: Linux host11.registrar-servers.com 4.18.0-553.lve.el8.x86_64 #1 SMP Mon May 27 15:27:34 UTC 2024 x86_64
User: robovet (12567)
PHP: 7.2.34
Disabled: NONE
$ pwd: /proc/thread-self/root/lib/firewalld/services/
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File: //proc/thread-self/root/lib/firewalld/services/smtp-submission.xml
<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Mail (SMTP-Submission)</short>
  <description>SMTP-Submission allows remote users to submit mail over port 587.</description>
  <port protocol="tcp" port="587"/>
</service>
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