SMTP Authentication

HCL Domino Domino Forum
1

HelloWhen I send a new message to a specific address I get the following error. How to solve this problem?

Best Regards,

Ref: PBL094551

2xx.x3.2x4.0/23 is listed on the Policy Block List (PBL)

Outbound Email Policy of The Spamhaus Project for this IP range:

This IP range has been identified by Spamhaus as not meeting our policy for IPs which should deliver ‘direct-to-mx’ mail to PBL users.

Important: If you are using any normal email software such as Outlook, Entourage, Thunderbird, Apple Mail, and you are being blocked by this Spamhaus PBL listing when you try to send email, the reason is simply that you need to turn on “SMTP Authentication” in your email software settings (Tools : Accounts : Properties : Outgoing Mail Server : check “My server requires authentication”).

If you do not know how to do this, ask your Internet Service Provider for help with “SMTP Authentication”.

2

Subject: SMTP Authentication

You are not using a “normal email sofware” like Outlook, Entourage, Thunderbird, Apple Mail and so on, so this has nothing to do with SMTP authentication.

You are sending your mails through a Domino server and it appears, that the intended recipient is using a mail filter based on the Spamhaus blacklist, which happens to include the server that finally sends your mails to Internet recipients. This could be your Domino server (if it is connected to the Internet directly) or some other gateway server.

All in all, this is your administrator’s task. Nothing you can do about it in configuriong DWA.