Filter out spam emails sent from fake internal address - ORF Forums

Filter out spam emails sent from fake internal address RSS Back to forum

1

Hi

we have started receiving a lot of spam in the last week. The emails are showing as being sent by the receiving address e.g. sending to . I can see that they have originated from elsewhere but am not sure how to stop these.

Is there an option in ORF to prevent mail being received from internal domain address on an IP other than our static IP address? i.e. block all external IPs sending mail from our domain.

Thanks

by Paul Allen 7 years ago
2

@Paul Allen: The best approach is publishing an SPF record with a policy which allows only your MXs to send emails in the name of your domain and enabling the SPF test of ORF. See our article at http://www.vamsoft.com/howto-blacklist-self-spam.asp for detailed instructions and for other possible solutions.

by Krisztian Fekete (Vamsoft) 7 years ago
(in reply to this post)

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