Spam Mails from self

Problem reported by Ishan Talathi - 4/14/2019 at 11:11 PM

Resolved

Hello,

We are on latest current Smartermail.

Our users are receiving emails

User.name@domain.com to User.name@domain.com

These emails do not have any SPF record and are coming from different sources.

Subject is just user.name

As we are on Smartermail Enterprise, the users on Global Address List are Trusted Senders.

So these spam emails pass through without any spam checks and are delivered directly to the inbox.

How can we prevent this type of spam?

3 Replies

John Marx Replied

I think this should become a feature request that if the user isn't authenticated and coming from an internal domain that it isn't accepted.

Shaun Peet Replied

Duplicate of this thread:

Kyle Kerst Replied

Employee Post Marked As Resolution

To resolve these issues you'll need a combined approach:

1. Enable SMTP authentication on the domain, and under Settings>Protocols>SMTP IN.

2. Deploy SPF records, DKIM, etc to verify your outbound emails against.

3. Increase the weight associated with failed SPF checks under Settings>Antispam to force rejection of these messages.

Kyle Kerst

Lead Internal Network/System Administrator

SmarterTools Inc.

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