[BlueOnyx:21427] Re: localhost sending 14K emails in a month?

[Ken Hohhof]

This message was originally HTML formatted.  View in a HTML capable client to see the original version.\r\n\r\nThose should be rejected during the smtp session, any bounce message should be generated by the sender's server. Maybe you are generating delivery failure messages for local users?


---- Original Message ----
From: "Chuck Tetlow" 
Sent: 9/27/2017 11:57:38 PM
To: "BlueOnyx General Mailing List" 
Subject: [BlueOnyx:21426] Re: localhost sending 14K emails in a month?

Probably backscatter. 

Someone sends a message to a random address on your server, and the server send back a error reply if that username/e-mail address doesn't exist. The addresses are compiled by using the book of names for babies, and other lists - all trying to guess valid e-mail address names. If it fails or bounces - no big deal to them. If it works, then they have a valid e-mail address they can sell for a few pennies.

Unfortunately, in the meantime - your server is kept busy sending out ridiculous numbers of error messages. And sometimes, can even get blacklisted for all those error messages.


Chuck


---------- Original Message -----------
From: Lewis Gardner lewisg at iglou.com 
To: BlueOnyx General Mailing List blueonyx at mail.blueonyx.it 
Sent: Thu, 28 Sep 2017 00:01:17 -0400 
Subject: [BlueOnyx:21425] localhost sending 14K emails in a month? 

 According to Usage Information, Email, Senders localhost on one of my 
 5209R servers has sent 13,990 emails this month. Mostly during one week 
 and one other day. 

 Is there any reasonable explanation for this behavior? 

 What to do? 
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------- End of Original Message -------
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