1 Topic by tractor19

  • tractor19
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Topic: Fail2ban is blocking my smartphone

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):
1.6.3
- Deployed with iRedMail Easy or the downloadable installer?
downloadable installer
- Linux/BSD distribution name and version:
Ubuntu Server 22.04
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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..
====
Good afternoon
The IP address of my smartphone is blocked, which does not allow you to enter it through a smartphone. Both in the browser, via outlook and iOS Mail.
Looking in /var/log/fail2ban.log I saw that Dovecot was blocking me.

mail fail2ban.actions[691]: NOTICE [dovecot] Ban 74.200.174.321

When unlocking an ip using a code

fail2ban-client set dovecot unbanip 74.200.174.321

the lock is removed, but after five minutes it is added again.
Going into phpmyadmin in the "fail2ban" table, I find my ip in the "varhar" column

communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; no servers could be reached

Can anyone tell me how to fix it?

----

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

2 Reply by dave.opc

  • dave.opc
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Re: Fail2ban is blocking my smartphone

you probably have email configured on your iphone, and configured incorrectly.
review your setting and fix the problem there.

3 Reply by Cthulhu

  • Cthulhu
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Re: Fail2ban is blocking my smartphone

communications error to 127.0.0.53#53: timed out

did you configure your dns reslover on localhost?
if you don't run an own dns resolver, but configure to use one on localhost, this won't work

4 Reply by tractor19

  • tractor19
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Re: Fail2ban is blocking my smartphone

Cthulhu wrote:

communications error to 127.0.0.53#53: timed out

did you configure your dns reslover on localhost?
if you don't run an own dns resolver, but configure to use one on localhost, this won't work

I did not make such settings. I went exactly according to the instructions and everything worked for me until the moment. Can you tell us in detail or send instructions on specific steps, please?

5 Reply by tractor19

  • tractor19
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Re: Fail2ban is blocking my smartphone

dave.opc wrote:

you probably have email configured on your iphone, and configured incorrectly.
review your setting and fix the problem there.

The iPhone has Outlook and iOS Mail. I deleted the accounts in them and removed myself from the blacklist. After a couple of minutes, he added me there again

6 Reply by tractor19

  • tractor19
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Re: Fail2ban is blocking my smartphone

I was able to find a solution. The application, iOS Mail, carried out authorization of the mail account, which gave an error, but the application did not issue a warning or a window. After deleting all accounts and leaving them in Outlook, they stopped adding me