Back to Community Threads
1
How to prevent email address fishing
Question asked by Sarah Weinberger - 9/23/2014 at 2:46 PM
Answered
I reviewed my SMTP logs and see quite a few entries fishing for email addresses. One or more servers somewhere are sending several times an hour mails to non-existing email addresses. They receive the "No such user here" message.
 
How do I prevent this fishing?

2 Replies

Reply to Thread
3
Scarab Replied
9/23/2014 at 5:00 PM
Marked As Answer
You can stop Email Harvesting in Smartermail by going to SECURITY > ADVANCED SETTINGS > ABUSE DETECTION. If you do not have any Rules listed, then click on the [NEW] button. For "Detection Type" select "Bad SMTP Sessions (Harvesting)". You can then set your "Time Frame",  "Bad Sessions Before Block" and "Time to Block". 
 
I have two Bad SMTP Sessions (Harvesting) set... one with a Time Frame of 5 minutes, 5 Bad Sessions, and a 60 min Time to Block...the other with a Time Frame of 60 minutes, 15 Bad Sessions, and a 43200 min Time to Block.
 
 
0
Uwe Degenhardt Replied
5/13/2015 at 2:34 PM
Hi Scarab, excellent idea ! Thank you. Uwe
Back to Community Threads

Reply to Thread

Related Knowledge Base Articles

Set up Autodiscover for SmarterMailSmarterMail > Installation and Configuration
Moving SmarterMail to a New Hosting CompanySmarterMail > Domain/User Configuration and Management
Cannot Receive Mail MessagesSmarterMail > Troubleshooting
Migrate SmarterMail to a Different ServerSmarterMail > Installation and Configuration
Resolving SMTP Failures on AWS-based ServerSmarterMail > Server Configuration and Management