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Posts Tagged ‘bounce’

Email Delivery Status Tracking …. for successes, failures, and bounces of all kinds

Tuesday, July 10th, 2018

LuxSci automatically tracks the delivery status for all email messages sent via SMTP, WebMail, and the LuxSci API. This report indicates whether or not the messages were successfully delivered to each recipient’s email servers, if they failed to be accepted there for some reason, or they are still queued at LuxSci. For many purposes, this automatic delivery status tracking is more than sufficient.

A standard automatic delivery tracking process has one limitation. For the case where an email message is successfully delivered to the recipient’s servers but then later it bounces back to the sender, the message will show as “delivered” (because it was) and there will be no indication of the subsequent bounce.

The optional “Automatic SMTP Bounce Processing” feature takes care of this situation.

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Where’s the Email? Diagnosing and Resolving Issues with Missing Email

Monday, December 1st, 2014

In many ways, the Internet is still like the Wild Wild West. Email messages sent to you or from you can and do “go missing” for no apparent reason.  This can happen no matter what email provider you use. So, what happened to these “AWOL” messages?  How can you diagnose and solve the problem?

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Bounce Back & Backscatter Spam: Who Stole My Email Address?

Tuesday, September 24th, 2013

spamSo, you’re minding your own business, going about your daily tasks, checking your email, and suddenly your INBOX is flooded with a series of non-delivery reports (aka NDRs or bounce messages). But wait just a minute, you didn’t send these. How did this happen? Did someone steal your email address?  How is that possible?

What has most likely happened here is that you’ve fallen victim to “backscatter“, or as it’s commonly known, bounce-back spam. As spam-detection techniques have evolved and become more accurate, the spammers have been forced to devise increasingly complicated and devious methods of getting their messages delivered. For example: email forgery.

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Enforcing and Detecting TLS Email Encryption on Inbound Messages

Thursday, June 7th, 2012

SMTP TLS allows email messages to be transmitted from the sender’s email server to the recipient’s over a secure channel that prevents eavesdropping.  TLS is an extremely useful and popular technology as it is seamless —  the sender and recipient do not have to do anything special — and provides a level of server-to-server security important for compliance, HIPAA, and privacy in general.

Use of SMTP TLS requires that both the sender’s and the recipient’s email servers support it.  For example, LuxSci’s servers support TLS and will “talk TLS” to any recipient server that also does.  

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Why does my email server appear to be blacklisted by Barracuda?

Friday, May 18th, 2012

Sometimes you’ll get an email bounced back to you saying that your email server is blacklisted by Barracuda due to IP reputation even though you know your server is not blacklisted. An example of one such bounce is listed below.

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