Re: [Mailman-Users] Newbie Question -- Attachments (again)
Newman, Linda (newmanld) wrote: I have read through the FAQ and tried to locate every piece of information I could about MIME types and attachments, esp. reading 4.39, and I'm still confused, so am hoping that others can provide some simple clarification. What I'd like to do: 1) Prevent all attachments from going through. (Note that if my settings below are too broad and will result in rejecting messages that aren't really attachments, let me know.) See below. 2) Accept html, or real text format formatted messages without translating them to plain text. However, if this means that other formats such as pdf, word, etc., would also have to be accepted, than I'd give up on html. It doesn't, you can do it - except see below regarding multipart/alternative. 3) Send a notice automatically to a sender if their attachment has been rejected. I don't think you can do this if the whole message is not rejected. 4) Send the remaining plain text part of the message to the list without the attachment. You can do this, but I don't think you can get a reject notice to the poster in this case. My current 'Content Filtering' options (see below) are rejecting attachments and html-formatted messages. The entire message is rejected -- even if there are remaining plain text parts. RTF formatted messages are, however, converted to plain text. No notice of a rejection is sent to the poster, so I've configured the last option to send the message to the e-list owner, so that the owner could manually notify users. This will only work if the entire message is filtered and nothing is left for the list. Note that I don't seem to have access to the unix shell. My current list Content Filtering options are as follows: Should Mailman filter the content of list traffic according to the settings below? -- Yes Right. Remove message attachments that have a matching content type. none listed Remove message attachments that don't have a matching content type. -- I've listed two types -- text/plain and, on a separate line text/html This won't work. It's too restrictive it will only allow single part messages whose content-type is text/html or text/plain. You also need to allow the text/plain and/or text/html parts from multipart messages. Thus you must add to the above types multipart/mixed multipart/alternative Also, you may wish to add message/rfc822 to allow text/plain and text/html parts from some forwarded messages. Note that allowing these types does not allow the entire multipart through, it just alows its sub-parts to be examined rather than deleted. Further, note that if the message contains a multipart/alternative part with both a text/plain alternative and a text/html alternative, only the first alternative which is always supposed to be the text/plain part. To get HTML through to the list you either have to disallow text/plain or make sure the HTML is not in a multipart/alternative part with a text/plain alternative. This is difficult if not impossible to do with some MUAs. Should Mailman convert text/html parts to plain text? No Good. Action to take when a message matches the content filtering rules. Forward to List Owner See above. -- Mark Sapiro [EMAIL PROTECTED] The highway is for gamblers, San Francisco Bay Area, Californiabetter use your sense - B. Dylan -- Mailman-Users mailing list [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/
RE: [Mailman-Users] Newbie Question -- Attachments (again)
Mark -- I really appreciate your answers to my questions. I now have the following 'pass types' allowed: multipart/mixed multipart/alternative text/plain text/html message/rfc822 This appears to handle plain text messages, and forwarded plain text messages, while still dis-allowing attachments that are word files or pdf files, executables, etc. It also continues to translate html messages into plain text, but if I understand your answer below, this is because the first part of a multipart/alternative message is usually plain text, and so that's what mailman accepts. So, it appears that if I want html formatted messages to also be on this list, while of course also still allowing plain text, I'd have to either a) find an MUA that doesn't send html as multipart, but just as html (suggestions?) b) not do any filtering of attachments. Let me know if I have mis-understood. -- Linda -Original Message- From: Mark Sapiro [mailto:[EMAIL PROTECTED] Sent: Friday, October 15, 2004 3:03 PM To: Newman, Linda (newmanld); '[EMAIL PROTECTED]' Subject: Re: [Mailman-Users] Newbie Question -- Attachments (again) Newman, Linda (newmanld) wrote: I have read through the FAQ and tried to locate every piece of information I could about MIME types and attachments, esp. reading 4.39, and I'm still confused, so am hoping that others can provide some simple clarification. What I'd like to do: 1) Prevent all attachments from going through. (Note that if my settings below are too broad and will result in rejecting messages that aren't really attachments, let me know.) See below. 2) Accept html, or real text format formatted messages without translating them to plain text. However, if this means that other formats such as pdf, word, etc., would also have to be accepted, than I'd give up on html. It doesn't, you can do it - except see below regarding multipart/alternative. 3) Send a notice automatically to a sender if their attachment has been rejected. I don't think you can do this if the whole message is not rejected. 4) Send the remaining plain text part of the message to the list without the attachment. You can do this, but I don't think you can get a reject notice to the poster in this case. My current 'Content Filtering' options (see below) are rejecting attachments and html-formatted messages. The entire message is rejected -- even if there are remaining plain text parts. RTF formatted messages are, however, converted to plain text. No notice of a rejection is sent to the poster, so I've configured the last option to send the message to the e-list owner, so that the owner could manually notify users. This will only work if the entire message is filtered and nothing is left for the list. Note that I don't seem to have access to the unix shell. My current list Content Filtering options are as follows: Should Mailman filter the content of list traffic according to the settings below? -- Yes Right. Remove message attachments that have a matching content type. none listed Remove message attachments that don't have a matching content type. -- I've listed two types -- text/plain and, on a separate line text/html This won't work. It's too restrictive it will only allow single part messages whose content-type is text/html or text/plain. You also need to allow the text/plain and/or text/html parts from multipart messages. Thus you must add to the above types multipart/mixed multipart/alternative Also, you may wish to add message/rfc822 to allow text/plain and text/html parts from some forwarded messages. Note that allowing these types does not allow the entire multipart through, it just alows its sub-parts to be examined rather than deleted. Further, note that if the message contains a multipart/alternative part with both a text/plain alternative and a text/html alternative, only the first alternative which is always supposed to be the text/plain part. To get HTML through to the list you either have to disallow text/plain or make sure the HTML is not in a multipart/alternative part with a text/plain alternative. This is difficult if not impossible to do with some MUAs. Should Mailman convert text/html parts to plain text? No Good. Action to take when a message matches the content filtering rules. Forward to List Owner See above. -- Mark Sapiro [EMAIL PROTECTED] The highway is for gamblers, San Francisco Bay Area, Californiabetter use your sense - B. Dylan -- Mailman-Users mailing list [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/
RE: [Mailman-Users] Newbie Question -- Attachments (again)
Newman, Linda (newmanld) wrote: Mark -- I really appreciate your answers to my questions. I now have the following 'pass types' allowed: multipart/mixed multipart/alternative text/plain text/html message/rfc822 This is good. This appears to handle plain text messages, and forwarded plain text messages, while still dis-allowing attachments that are word files or pdf files, executables, etc. It also continues to translate html messages into plain text, but if I understand your answer below, this is because the first part of a multipart/alternative message is usually plain text, and so that's what mailman accepts. Right. It isn't translating HTML to plain text. It is selecting the text/plain part over the text/html part from a multipart alternative message. BTW, i left out a phrase in Further, note that if the message contains a multipart/alternative part with both a text/plain alternative and a text/html alternative, only the first alternative which is always supposed to be the text/plain part. It should have said only the first alternative ... is retained for the list, but you seem to have understood it anyway. So, it appears that if I want html formatted messages to also be on this list, while of course also still allowing plain text, I'd have to either a) find an MUA that doesn't send html as multipart, but just as html (suggestions?) b) not do any filtering of attachments. Let me know if I have mis-understood. You appear to understand perfectly. Regarding a), Netscape/Mozilla for example allows you to choose whether to send HTML vs multipart/alternative in various ways - globally, by address book entry, by domain, by asking. As far as I know, M$ lookout (er.. outlook) express allows you to specify plain text in address books, but if you want to send HTML, it always sends multipart/alternative. I think outlook (not express) may send HTML only, but I can't tell you how to set it up. Normally I'm only interested in setting things to not send any HTML. -- Mark Sapiro [EMAIL PROTECTED] The highway is for gamblers, San Francisco Bay Area, Californiabetter use your sense - B. Dylan -- Mailman-Users mailing list [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/
