About Donald Nash

Donald Nash · 03-30-2012

I'd like to be able to send messages to the on-board spam quarantine via a message or content filter, but this doesn't seem to be allowed. I can send messages to other quarantines like Policy, just not to the spam quarantine. What I'd like to do is h...

Donald Nash · 01-12-2010

I just downloaded the release notes for AsyncOS ESA 7.0.0 FCS. The very first thing I noticed was that it's now done in Cisco's documentation style. The assimilation continues. I liked IronPort's old style better.Just had to grump a little...

Donald Nash · 12-22-2008

Does anyone know of a good list of domains which are known to sign all outbound mail with DK or DKIM? I'd like to start doing what Google has started doing as documented here:http://gmailblog.blogspot.com/2008/07/fighting-phishing-with-ebay-and-paypa...

Donald Nash · 12-10-2008

Are there any plans for IronPort to implement Sender Rewriting Scheme in AsyncOS? I'm personally not a big fan of SPF and SRS, but like it or not they're being deployed. We use a C300 to operate a mail forwarding service for our alumni (we get the fo...

Donald Nash · 11-27-2008

What happens when none of the content filters enabled for a particular policy have final actions? Is the default final action to deliver the message after applying all the relevant non-final actions? This is how it works for message filters, but I'm ...

Donald Nash · 02-02-2013

Andrew,Whitelisting a particular email address happens at a totally different layer of the system, since email addresses aren't sent until after the SMTP connection is up. You'll want to set up an Incoming Mail Policy for that.++Don

Donald Nash · 01-02-2013

We're seeing the same problem. Our outbound mail goes through a private listener with SBRS turned off. We scan for outbound spam to detect cracked accounts, and route spam positive messages to a quarantine. We've seen lots of false positives today. M...

Donald Nash · 12-17-2012

It means the incoming connection terminated before the SMTP client sent the QUIT command. It could mean that the client is badly behaved (the standard requires that clients always issue a QUIT command before closing the connection), or that the conne...

Donald Nash · 11-23-2012

"No message injected within timeout period" means the SMTP client is connecting but not sending a message. Try turning on injection debugging to get an SMTP trace of the connection.++Don

Donald Nash · 11-17-2012

Looks like the connection is getting dropped after the client says "DATA" and the IronPort says "go ahead". I wouldn't expect the IronPort to drop the connection immediately after saying "go ahead" (and besides, why would it do so only for this clien...

Member Since	‎12-19-2009 08:44 AM
Date Last Visited	‎05-12-2021 12:02 AM
Posts	279
Total Helpful Votes Received	31

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User Activity

Sending messages to the spam quarantine via a content filter

The assimilation continues

List of domains which sign all outbound mail with DK/DKIM?

Sender Rewriting Scheme?

What happens when no content filters have a final action?

Re: Ironport Whitelist and related questions

Re: Lots of false positives on outbound SPAM filtering

Re: What does "ICID lost" mean?

Re: Ironport not accepting mails from some domains. Throwing ex

Re: lost messages on IronPort