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postfix-users: Re: Is Postfix Checking Spamhaus RBL

Re: Is Postfix Checking Spamhaus RBL

From: Stan Hoeppner <stan_at_nospam>
Date: Fri Oct 22 2010 - 19:21:55 GMT

Carlos Mennens put forth on 10/22/2010 1:29 PM:
> I had someone tell me today that they were unable to send email to
> their customer from the mail server because they got the following
> error:
> *****************************************
> Failed Recipient: user@example.tld
> Reason: Remote host said: 554 Service unavailable; Client host
> [] blocked by;
> *****************************************

> Can anyone tell me if I am mis-understanding anything? Why would
> someone who's blacklisted on the PBL from Spamhaus be allowed to send
> me email when it's listed as RBL in 'smtpd_recipient_restrictions'?

Is it your Postfix server at IP address, rDNS, that is being rejected by remote
hosts due to the PBL listing? This does _not_ mean that hosts sending
mail _to_ your Postfix server will be rejected due to that PBL listing. is not listed in Zen. I don't understand why you included
this transaction in your post. It is irrelevant to the issue.

Can you please clearly state what your question is? The way you have
asked it doesn't make sense.

-- Stan