In general there are no problems associated with attachments going through email systems. It's common and expected. The type of attachment though is flagged often. PDF files are OK. Exe files are not.

From: LISTSERV List Owners' Forum [mailto:[log in to unmask]] On Behalf Of Ian Fairclough
Sent: Tuesday, October 27, 2015 3:11 PM
To: [log in to unmask]
Subject: Re: sending a file to a list

LSTOWN-L readers,

Margaret King replied, "Are you saying that sometimes, or perhaps even this time, when people send attachments you get a lot of delivery errors?"  No, nothing of the sort!  (But thanks for asking, Margaret.) If I and my co-listowners did, then at least we'd know there was a problem.  Rather, I'm concerned that a subscriber's email provider doesn't deliver a message from a list having an attachment, blocks further delivery of mail from the list, etc. - and neither the subscriber nor we listowners ever get to know about the problem.

I don't even know if a problem exists!  In the scenario I describe, listowners wouldn't get to know.  In posting to LSTOWN-L I was hoping that a reader would be able to either say that there is no such problem (in which case messages from the list can go out with attachments, no restrictions) or that there is a problem (in which case, the list settings need to be adjusted to prevent inclusion of attachments).

A related concern is that some images that are embedded within emails (and subscribers contribute a lot of them, they're quite necessary for understanding the work subscribers perform) are actually processed as attachments at some stage in transmission.

Sincerely - Ian

Ian Fairclough
Cataloging and Metadata Services Librarian
George Mason University
703-993-2938
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