Mailcow-dockerized: enhancement request: self dnsbl check

[lgusewski]

I want to suggest a new function for the mailcow, to make a self check if the cow is listed on some dns black list and show the results all admin users in the ui. I saw such a function in the Synology MailPlus server, and it seems to be helpful to fuse sending mails over the cow.

[ntimo]

I think this would be really great for the admin :-) Let’s wait and see it this can be added.

[andryyy]

I'm not interested. :-( There are a million services that inform you when you are blacklisted.

Maybe someone is interested and wants to create a PR.

[Braintelligence]

While you're at it, why don't you also code a replacement for https://dmarc.postmarkapp.com/ ? ;P

[andryyy]

Naaaaa...

[mitchellurgero]

I made a php script that does this: https://gist.github.com/mitchellurgero/44ef76123e33bea88ffeabcd53f0cd71

It does require small modifications but you could cronjob it.

[Adorfer]

@mitchellurgero
This does only IPv4? (since delivers versus google&co systematically seem go pass via IPv6 since a while)

[ntimo]

@mitchellurgero I think if @andryyy could add your script to the webinterface this would be super awesome.
@mitchellurgero It seems like the script is not working on my server when I open the page it returns nothing.

[mitchellurgero]

@ntimo - It is CLI only (Notice the if statement on line 89). Try via SSH on your server: php rbl_check.php and watch it return it's data that way. It will require some modification to work seamlessly with Mailcow.

@Adorfer - It only does IPv4, however with small modifications IPv6 could be added.

[strarsis]

+1! Self-blacklist checks and auto-notification of postmaster.