outgoing e-mail blacklisted - ORF Forums

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Up until yesterday (4/10/2011) ORF was working properly. Today any valid sender to any valid address fails with the following error on ORF:

Version: 4.4 REGISTERED
Log Mode: Verbose
Server: whw-exchange.whw.com
Source: SMTPSVC-1
Time: 4/11/2011 11:31:51 PM
Class: Blacklist
Severity: Information
Actions: Reject
Filtering Point: On Arrival
HELO/EHLO Domain: (not available)
Related IP Address:
Message ID: (not available)
Email Subject: test 11
Email blacklisted by the recipient validation (all recipients blacklisted).

and the following error from Outlook:

Your message did not reach some or all of the intended recipients.

Subject: test 11
Sent: 4/11/2011 11:32 PM

The following recipient(s) could not be reached:

'' on 4/11/2011 11:32 PM
550 5.7.1 Message rejected (no valid recipients).

If ORF service is shut down then Outlook works properly & e-mail is sent!!!!

by Harold Wright 8 years ago

@Harold Wright: I suppose these are outgoing emails? I suspect there was a network change and your outgoing emails are now blacklisted. This is because you need to tell ORF explicitly to whitelist outbound emails if they are not coming from the intranet/via authenticated SMTP sessions.

If ORF runs in the DMZ at and is your Exchange server at a fixed IP address, I recommend that you add to the IP Whitelist of ORF. This will guarantee that emails coming via your Exchange server will be whitelisted and thus not subject to the Recipient Validation Test.

by Peter Karsai (ORF Team) 8 years ago
(in reply to this post)

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