1 Topic by evenmoreconfused

  • evenmoreconfused
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Topic: Port 2703 Usage not in Doc Page

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.4.0
- Deployed with iRedMail Easy or the downloadable installer? Installer
- Linux/BSD distribution name and version: Centos 8
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Manage mail accounts with iRedAdmin-Pro? No
====

Hello again,

Our firewall keeps noting outgoing TCP packets from the iRedMail server to port 2703. The addresses are all in the 208.83.x.y range, which resolves to CloudMark, a sender reputation service.

This seems perfectly reasonable, but port 2703 isn't listed in the list of ports iRedMail uses (https://docs.iredmail.org/network.ports.html). Perhaps it should be added?

Paul

----

Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by evenmoreconfused

  • evenmoreconfused
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Re: Port 2703 Usage not in Doc Page

I now see the document is more about inbound ports and inter-module traffic. However, it still would be helpful to have a list of standard outgoing traffic so that (only) the relevant ports can be opened on the corporate firewall.

3 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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Re: Port 2703 Usage not in Doc Page

It might be used by SpamAssassin plugins or some other components.