There are some users reported to me that emails to certain domains are being rejected. After further check, I realized that the emails are being blocked by uceprotect.
This is the error message
—– Transcript of session follows —– … while talking to
<<< 554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx]
using dnsbl-2.uceprotect.net; Net xxx.xxx.0.0/16 is UCEPROTECT-Level2 listed
because of 301 abusers. Your ISP xxx has to fix this. See:
554 5.0.0 Service unavailable
<<< 554 5.5.1 Error: no valid recipients
I heard about uceprotect before, how they block the entire ISP’s IP just because of some users of that ISP sending spam emails, but never though that will happen to me.
Normal rbl (dnsl) usually only block certain IP’s, but this uceprotect “smart” and “brave” enough to block the whole ISP’s IP range.
Simply said that I’m getting punished by uceprotect because somebody else spams. That is stupid.
In their website clearly says that my IP was not, is not involved in a spamrun, but still getting “the punishment”. This is the quote from their website.
YOU ARE NOT!. Your IP xxx.xxx.xxx.xxx was NOT involved in a spamrun, but has a spammy neighborhood. Other customers within this range did not care about their security and got hacked and started spamming, while your provider has possibly not even noticed that there is a serious problem.
We are sorry for you, but you have chosen an provider not acting fast enough on spammers.
I try so hard to make my IP’s clean, by removing viruses and make sure that no spam going outside through my mail servers. But my hard work is not enough, I still got blocked by uceprotect because somebody else spams.
Uceprotect in their website suggest that I should change ISP, that not that easy, and certainly not cheap.
So, I use a shortcut. I contact the admin of the domain that use uceprotect, and asked politely if it possible for them not to use uceprotect for emails from my domains. I gave them every information they need and explain my situations, and thankfully they agreed and approved my request.
Uceprotect may be want to be a good guy in spam fighter, but to me, uceprotect simply a bad guy.