// <ahref="./index.html">Document Index</a></div><h1id="which-network-ports-are-open-by-iredmail">Which network ports are open by iRedMail</h1>
<li>110: POP3 service, insecure connection. Supports STARTTLS for secure connection.</li>
<li>995: POP3S (Secure POP3 over SSL). Deprecated, recommended to use port 110 with STARTTLS.</li>
<li>143: IMAP service, insecure connection. Supports STARTTLS for secure connection.</li>
<li>993: IMAPS (Secure IMAP over SSL). Deprecated, recommended to use port 143 with STARTTLS.</li>
<li>4190: managesieve service. (Refuse connections from external network in iptables by default). Note: in old iRedMail releases, it's port 2000, it's deprecated and not even listed in <code>/etc/services</code> file.</li>
</ul>
<h2id="web-server-apache-or-nginx">Web server (Apache or Nginx)</h2>
<ul>
<li>80: normal web service port</li>
<li>443: HTTPS (http over SSL, secure connection)</li>
</ul>
<p>SOGo groupware provides Exchange ActiveSync (EAS) support through port 443.</p>
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