1 Topic by schnappi

  • schnappi
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  • Registered: 2015-02-13
  • Posts: 156

Topic: iRedMail IPv6 setup

Server IP is blocked by the extortion oriented uceprotect.net level 3 blocklist. This list basically blocks everything on the subnet and it can only be removed through payment. For some reason Microsoft uses this  DNSBL blocklist, so mail to Microsoft domains (Hotmail, Outlook) are not being delivered. Tried the usual steps like reaching out to Microsoft Postmaster tools (https://support.microsoft.com/supportre … a03d6b8d75), but this is a waste of time and this has been going for more than a month so need to take some action.

Would like to try setting up IPv6 on the server.

1) Will setting up IPv6 resolve this issue - because Postfix will no longer be using the blacklisted IPv4 server IP?

2) What is the best guide to setting up IPv6 on iRedMail? Found this topic: https://forum.iredmail.org/topic1968-ir … vecot.html

If anything important it missing regarding IPv6 let me know. Thanks.



==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.4
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer
- Linux/BSD distribution name and version: Debian 10
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

----

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

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,088

Re: iRedMail IPv6 setup

schnappi wrote:

1) Will setting up IPv6 resolve this issue

Hard to tell, we don't know how Microsoft servers work. But i guess worth to try.

schnappi wrote:

2) What is the best guide to setting up IPv6 on iRedMail?

Try these simple settings first to make sure Postfix/Dovecot working on both ipv4/v6.

- In /etc/postfix/main.cf: "inet_protocols = all".
- In /etc/postfix/dovecot.conf: "listen = * [::]"

3 Reply by schnappi (edited by schnappi 2022-08-22 09:50:14)

  • schnappi
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  • Registered: 2015-02-13
  • Posts: 156

Re: iRedMail IPv6 setup

Finally got around to adding an IPv6 address to the server. Have setup an IPv6 address and a reverse IPv6 address.

Some points to note:

-The iRedMail firewall was already setup to permit IPv6 connections, so didn't need to make any firewall changes.

-/etc/postfix/main.cf: "inet_protocols = all"
No changes needed.

- In /etc/dovecot/dovecot.conf: "listen = * [::]"
No changes needed.

Does anything below need to be modified?:
http://www.postfix.org/IPV6_README.html


Everything appears to be working. The only issue is that that most email servers do not use IPv6. Therefore, the goal of escaping the UCEPROTECT Blacklist scam by utilizing IPv6 is futile.