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List Enclosure Support

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Matt Dralle
Site Admin

Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA

Posted: Sat Jun 03, 2006 3:53 pm Post subject: List Enclosure Support

Dear Listers,



Over the years, I have resisted the urge to enable enclosure support on the Matronics Lists for a number of reasons relating to performance, capacity, capability, and security.  However, its now 2006 and most everyone using email these days is on an email client that, at some level, supports the viewing and handling of enclosures.  I get a fair amount of email each month from people on the various Lists asking why their posts of this or that picture didn't go through.  



Back quite a while ago by popular request, I enabled enclosure support for a few Lists such as the RV10-List, Kolb-List, and the Tailwind-List.  Contrary to my fears, there really hasn't been any significant issues on these Lists relating to the advent of enclosure support and for the most part, members have policed themselves well with respect to the size of things they have posted.



Having enclosures enabled on some Lists and not others has given me a fair amount of headaches with respect to filtering messages and content since the formats are often quite different between a typical MIME encoded message and a generic plain-text message.  The spammers are getting more cleaver all the time and are constantly trying to thwart my best efforts at keeping them from posting to the Lists.



So, for these reasons, I've have decided to go ahead and enable limited enclosure posting on all of the email Lists at Matronics.  This will not only increase the utility of the Lists, but will afford me a better opportunity to filter out the chaff.



Here are some of the features and limits of enclosures on the Matronics Lists:



1) 	Enclosures will only be posted to the Real Time version of the 

	Lists.



2) 	Enclosures will NOT be included in the Daily Digest version of 

	the Lists.



3)	Enclosures WILL BE forwarded on to the BBS Forum Web site.



4)	Enclosures will NOT be appended to the Archives.



5)	Enclosures will NOT be available in the List Browse feature.



6)	Only the following file types and extensions will be allowed:



		jpg, bmp, gif, txt, xls, pdf, and doc



	All other enclosures types will be rejected and email returned to

	sender.  The enclosure types listed above are relatively safe from

	a virus standpoint and don't pose a particularly large security risk.



7)	!! All incoming enclosures will be scanned for viruses prior to posting

	to the List.  This is done in real time and will not slow down

	the process of posting the message !!

Here are some rules for posting enclosures.  Failure to abide by these rules could result in the removal of a subscriber's email address from the Lists.



1)	Pay attention to what you are posting!!  Make sure that the files

	you are enclosing aren't HUGE (greater that 1MB).  Remember that there

	are still people checking they're email via dial up modem.  If you post

	30MB worth of pictures, you are placing an unnecessary burden on these

	folks and the rest of us, for that matter.



2)	SCALE YOUR PICTURES DOWN!!!  I don't want to see huge 3000 x 2000

	pictures getting posted that are 3 or 4MB each.  This is just 

	unacceptable.  Use a program such as Photoshop to scale the picture

	down to something on the order of 800 x 600 and try to keep the

	file size to less-than 200KB, preferably much less.



	Microsoft has a really awesome utility available for free that allows

	you to Right-Click on a picture in Explorer and automatically 

	scale it down and resave it.  This is a great utility - get it, use it!

	http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx

	Look for the link "Image Resizer"



3)	!! This would seem to go without saying, but I'll say it anyway.  Do not

	post anything that would be considered offensive by your grandmother.

	And you know what I'm saying; I don't want to see anything even 

	questionable. !!



4)	REMEMBER THIS: If you post a 1MB enclosure to a List with 1000 members

	subscribed, your 1MB enclosure must be resent 1000 times amounting

	to 1MB X 1000 = 1 Gigabyte of network traffic!!  BE CAREFUL and BE COURTEOUS!



I hope everyone will enjoy the added functionality of enclosures.  Please police yourself and use good judgement when posting messages with enclosures using the guidelines I've outlined above.



Best regards,



Matt Dralle

Matronics Email List Administrator

- The Matronics Kolb-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
Matt Dralle
Matronics Email List Administrator

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Tue Jun 06, 2006 5:32 pm Post subject: List Enclosure Support

Matt,



Is it possible to put on a  filter that will reject large attachment  

files that cause problems for the guys with slow dial-up connections?



Good intentions are sometimes inadequate and a large files are  

sometimes  posted accidently.

- The Matronics Kolb-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

Matt Dralle
Site Admin

Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA

Posted: Tue Jun 06, 2006 6:41 pm Post subject: Re: List Enclosure Support

Limiting incoming enclosure size can usually be done in most Email Clients - e.g. "Skip messages larger that xxxxKB".



That being said, stay tuned as I'm investigating a method that will automatically put the enclosures up on the Matronics web server and replace them in the email witha URL link to the same.  Should be the cool setup.



Matt Dralle

Matronics Email List Admin

- The Matronics Kolb-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
Matt Dralle
Matronics Email List Administrator

Jim Baker

Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA

Posted: Tue Jun 06, 2006 7:17 pm Post subject: List Enclosure Support

 	  Quote: 	
		   Is it possible to put on a  filter that will reject large attachment  

 files that cause problems for the guys with slow dial-up connections?


	


For those of you using Outlook...



Located under TOOLS, OPTIONS, MAIL SETUP tab, 

SEND/RECEIVE, and then EDIT the mail group 

settings....sounds difficult but is easy once you find it.



Jim Baker

580.788.2779

Elmore City, OK

- The Matronics Kolb-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

MKIIIX040

Joined: 31 Mar 2006
Posts: 123
Location: Millinocket, Maine

Posted: Wed Jun 07, 2006 4:57 am Post subject: List Enclosure Support

Eugene, if you go on the BBS site, which I don't use, you can see the 

individual file sizes before opening them.

Personally I like large files so I can zoon in for more detail,

especialy on porn sites. Kidding ofcourse.



Vic

N40KX 912ul

Maine



Matt,



Is it possible to put on a  filter that will reject large attachment

files that cause problems for the guys with slow dial-up connections?



--

- The Matronics Kolb-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
MKIIIX040
912UL

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