Thank you very much for that. Any idea how I could do that ?

Would it be easier to use the working Whois outside the container? I have tried 
to use the one outside the container but can’t figure out how to add it in the 
docker-compose. 

Sent from my iPhone

> On May 2, 2020, at 10:47 AM, Tom Hendrikx <t...@whyscream.net> wrote:
> 
> 
> Hi,
> 
> there are may dofferent whois clients (it's a simply binary which can query 
> various whois servers around the world. Not all whois clients support all 
> features. It seems that (from your example) the whois client on your docker 
> host supports querying by ip-address, but the whois binary inside the 
> 'letsencrypt' docker container doesn't.
> 
> Maybe you can install a different whois package in the container, this 
> depends on the distro the container was based on. My ubuntu 18.04 desktop 
> lists at least 3 commandline whois clients in the default repository.
> 
> Kind regards,
> 
>     Tom
> 
> On 02-05-2020 15:42, arsdale...@gmail.com wrote:
>> Hello,
>> 
>>  
>> 
>> I recently installed Fail2Ban along with nginx using the 
>> linuxserver/letsencrpt docker.  I love it.  It has solved a long term 
>> problem for me and made my network run much smoother.  I have ironed out all 
>> my install problems but one, which has been driving me crazy. 
>> 
>>  
>> 
>> In jail.local, I use action = %(action_mwl)s as my default action and after 
>> tailoring e-mail notification settings in sendmail-whois-lines.local with
>> 
>> Fail2Ban" ) | /usr/sbin/sendmail -t -v -H 'exec openssl s_client -quiet 
>> -tls1 -starttls smtp -connect smtp.gmail.com:587' -aumyusername 
>> -apmyapppassword <dest>  it works great except for one issue.
>> 
>>  
>> 
>> I believe the default action uses sendmail-whois-lines.conf
>> 
>>  
>> 
>> This is what I always get in the response:
>> 
>>  
>> 
>> [Querying whois.iana.org:43 '122.166.7.73'] [Querying whois.iana.org:43 
>> 'domain 122.166.7.73'] [whois.iana.org] % IANA WHOIS server % for more 
>> information on IANA, visit http://www.iana.org % % Error: Invalid query 
>> domain 122.166.7.73
>> 
>>  
>> 
>> In an effort to figure things out, I have tried
>> 
>> /usr/bin/whois 107.33.23.17 which is successful
>> sudo docker exec -it letsencrypt whois google.com which is successful
>> sudo docker exec -it letsencrypt whois 122.166.7.73 which fails with the 
>> above error message.
>>  
>> 
>> I am relatively new to docker, but here is my docker-compose:
>> 
>>  
>> 
>> version: "2"
>> 
>> services:
>> 
>>   letsencrypt: # https://github.com/linuxserver/docker-letsencrypt
>> 
>>     container_name: letsencrypt
>> 
>>     image: linuxserver/letsencrypt:latest
>> 
>>     restart: unless-stopped
>> 
>>     cap_add:
>> 
>>       - NET_ADMIN
>> 
>>     volumes:
>> 
>>       - /home/user/docker/letsencrypt/config:/config
>> 
>>       - /etc/localtime:/etc/localtime:ro
>> 
>>     environment:
>> 
>>       - PGID=xxxx
>> 
>>       - PUID=xxxx
>> 
>>       - EMAIL=my_em...@gmail.com
>> 
>>       - URL=myduckdns.duckdns.org
>> 
>>       - SUBDOMAINS=wildcard
>> 
>>       - VALIDATION=duckdns
>> 
>>       - TZ=America/New_york
>> 
>>       - DUCKDNSTOKEN=myxxxxxduckdnsxxxxxtoken
>> 
>>     ports:
>> 
>>       - "80:80"
>> 
>>       - "443:443"
>> 
>>  
>> 
>> Any help would be greatly appreciated.
>> 
>> Thanks,
>> 
>> Dan
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Fail2ban-users mailing list
>> Fail2ban-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/fail2ban-users
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