Re: Ultimate Spam
Am/On Mon, 29 Jan 2007 13:01:14 -0800 schrieb/wrote Richard Hart: (1) Does any hosting service or ISP offer you the capability to bounce spam? I know many offer excellent SPAM sequestering tools, even deleting offending messages so you never have to see them. I don't, I mark identified Spam, becuase of the risk to bounce a legal message. but I do bounce mails coming from ips listed in rbls or which have bad headers, viruses etc. (2) What is the best way to deal with the relatively recent phenomenon of GIF spam. on the client side it gets identified by SpamSieve on the Server FuzzyOCR is the way to go. All the best Matthias --- Admilon Consulting GmbH http://www.admilon.com Tel. +81-736-56-3905 ---
Re: Ultimate Spam
I am using Spam Assassin on my ISP as well as Spam Sieve on my laptop. Spam Assassin is not very aggressive (it flags spam correctly nearly 100% of the time, but lets about 50% of the spam thru). The advantage of using Spam Assassin is that it reduces the amount of spam I have to download when traveling by 50% (I download and review it by hand only when I have a high-speed connection). Spam Sieve is really good, but it has consistently failed to recognized joe jobs--where a spammer is using a return address at my domain, and there are automatic replies to that address from the intended addressee. I have special filters which seem to do a good job rejecting that source of unwanted email. To deal with .gif email I have a rule in PowerMail: If Spam Rating is high Move message into folder Spam Don't notify new message Don't show in Recent Mail = Move attachments to trash = Don't index message content Don't apply subsequent filters to this message The only problem with this is that PowerMail has a bug/feature lack that once you have said Don't index message content, there is no way to later index the message if you identify the email as legitimate. (Other than resetting the index, which I do every few months). Please don't ever bounce spam--it only adds to the frustrations of us Joes who have been Jobbed. A On Mon, 29 Jan 2007 13:01:14 -0800 Richard Hart said: (1) Does any hosting service or ISP offer you the capability to bounce spam? I know many offer excellent SPAM sequestering tools, even deleting offending messages so you never have to see them. But what I'd like to do is have my mail server bounce messages from specific IP addresses. For this service, I would switch mail service providers in a heartbeat. (2) What is the best way to deal with the relatively recent phenomenon of GIF spam. You know the ones. The Subject and body are random text. The attachment is a graphic containing the spam pitch. I haven't been able to derive a common identifier for them in the headers, and they are not easy to define in a spam rule. Richard Hart
Re: Ultimate Spam
By this do you mean that, if you have been spoofed as the return address, you will receive the bounce warnings from the mailer daemon? Richard Hart Alan wrote: Please don't ever bounce spam--it only adds to the frustrations of us Joes who have been Jobbed.
Re(2): Ultimate Spam
I mean that I receive about 10 messages like this per day, and they are serving no-one a useful purpose because I didn't send them because the return address was spoofed: The original message was received at Tue, 30 Jan 2007 22:00:07 +0100 from mx01.rrz.uni-hamburg.de [134.100.32.180] - The following addresses had permanent fatal errors - [EMAIL PROTECTED] (reason: 550 5.1.1 [EMAIL PROTECTED]... User unknown) (expanded from: [EMAIL PROTECTED]) - Transcript of session follows - ... while talking to [192.168.100.1]: DATA 550 5.1.1 [EMAIL PROTECTED]... User unknown 550 5.1.1 [EMAIL PROTECTED]... User unknown 503 5.0.0 Need RCPT (recipient) Final-Recipient: RFC822; [EMAIL PROTECTED] X-Actual-Recipient: RFC822; [EMAIL PROTECTED] Action: failed Status: 5.1.1 Remote-MTA: DNS; [192.168.100.1] Diagnostic-Code: SMTP; 550 5.1.1 [EMAIL PROTECTED]... User unknown Last-Attempt-Date: Tue, 30 Jan 2007 22:00:10 +0100 I think that is what you are saying also. Alan = On Tue, 30 Jan 2007 10:14:07 -0800 Richard Hart said: By this do you mean that, if you have been spoofed as the return address, you will receive the bounce warnings from the mailer daemon? Richard Hart Alan wrote: Please don't ever bounce spam--it only adds to the frustrations of us Joes who have been Jobbed.
Ultimate Spam
(1) Does any hosting service or ISP offer you the capability to bounce spam? I know many offer excellent SPAM sequestering tools, even deleting offending messages so you never have to see them. But what I'd like to do is have my mail server bounce messages from specific IP addresses. For this service, I would switch mail service providers in a heartbeat. (2) What is the best way to deal with the relatively recent phenomenon of GIF spam. You know the ones. The Subject and body are random text. The attachment is a graphic containing the spam pitch. I haven't been able to derive a common identifier for them in the headers, and they are not easy to define in a spam rule. Richard Hart
Re: Ultimate Spam
(2) What is the best way to deal with the relatively recent phenomenon of GIF spam. You know the ones. The Subject and body are random text. The attachment is a graphic containing the spam pitch. I haven't been able to derive a common identifier for them in the headers, and they are not easy to define in a spam rule. SpamSieve seems to be catching about 99.9% of these for me. If you're not using that product, I would suggest you look at it. Wayne
Re: Ultimate Spam
On Mon, 29 Jan 2007 13:01:14 -0800 Richard Hart said: (1) Does any hosting service or ISP offer you the capability to bounce spam? I know many offer excellent SPAM sequestering tools, even deleting offending messages so you never have to see them. But what I'd like to do is have my mail server bounce messages from specific IP addresses. For this service, I would switch mail service providers in a heartbeat. (2) What is the best way to deal with the relatively recent phenomenon of GIF spam. You know the ones. The Subject and body are random text. The attachment is a graphic containing the spam pitch. I haven't been able to derive a common identifier for them in the headers, and they are not easy to define in a spam rule. Richard Hart I filter GIF and JPG spam before it reaches the Spamsieve filter so they don't pollute the Spamsieve corpus. In my filters, my first filter is called Spam-gif and has two conditions: From is not in address book Attachment ends with .gif The Actions consist of: Move message into folder Spam Set label to Priority 4 I check my Spam folder once a day and delete the obvious spam after reporting it to SpamCop. Geoff -- Using PowerMail 5.5 (SpamSieve 2.4.4) on a G5 dual 1.8MHz, 3 GB RAM, under MacOSX 10.4.8
Re: Ultimate Spam
Have you looked at: http://www.hendricom.com/services.htm from these dudes who make: http://www.emailcrx.com/Welcome.html On Jan 29, 2007, at 3:01 PM, Richard Hart wrote: (1) Does any hosting service or ISP offer you the capability to bounce spam? I know many offer excellent SPAM sequestering tools, even deleting offending messages so you never have to see them. But what I'd like to do is have my mail server bounce messages from specific IP addresses. For this service, I would switch mail service providers in a heartbeat. (2) What is the best way to deal with the relatively recent phenomenon of GIF spam. You know the ones. The Subject and body are random text. The attachment is a graphic containing the spam pitch. I haven't been able to derive a common identifier for them in the headers, and they are not easy to define in a spam rule. Richard Hart
Re: Ultimate Spam
On Mon, Jan 29, 2007 at 10:16 pm +, Geoff Roynon wrote: I filter GIF and JPG spam before it reaches the Spamsieve filter so they don't pollute the Spamsieve corpus. In my filters, my first filter is called Spam-gif and has two conditions: I really don't think it's neccesary to do anything so complicated! I'm using POPfile, which works in a broadly similar way to SpamSieve, and I let that do the work. Its accuracy is currently 99.63%, and it was last reset 16 months ago. I can't remember when a gif spam last got through. I'm sure SpamSieve will cope just as well. -- TimH PowerMail 5.5.2 (build 4475) | OS X 10.4.8 | PowerBook FW/500 | 640MB RAM
