D

Dariusz

Recipients complains that Mailcow duplicates some e-mails. I cannot find any rules, and don’t know if it depends from specific e-mail data or specific recipients. They say that mail server is sending the same e-mail many time … Problem started about 2 weeks ago…
Please, help me how can I investigate and solve it ?
Regards Dariusz

aaronsmith Of course it’s not open relay, I’ve checked it and I’m quite sure (at this level as we can be something quite sure except death and taxes )
I’ve took control this spam problem at this moment, I was disabling accounts and then changing password then activate accounts again…
But there is still anxiety in my mind that it could be back couse I couldn’t find reason that problems …
Is it possible to somebody hack mailcow password generator ? or how it can to hack/take over so many accounts ?
Regards Darek

But it is white or black IP ranges per server … Is it possible to configure it per domain ?

DerLinkman I know this solution and it works but unfortunatelly I have almost one hundrend e-mail boxes at this domain and very many of them are spamming (.
I’m looking where is the hole …
Temporary solution can be cutting IP from with could login to email boxes this domain, is it possible in mailcow to configure ?

I’m really grateful of any your help.

Best regards Darek

I’ve big problem with mailcow sending spam e-mail. It happens only for one from eight domains I provide on this server. There is even ₂₀₀₀₀₀ spam e-mails in the queue for day, horrible
When I disable this problematic domain problem disappering, other domains doesn’t spamming.

Please help to find what causing problem, how to start to overcome it.

Thanks a lot in advance, I’m really stuck,
Regards Dariusz