[Mailman-Users] Attachment issue in Outlook

[Bruce Johnson]

In my experience this is not a Mailman issue, per se, but an Exchange issue on the sender’s or recipient's end:

https://community.spiceworks.com/topic/2164722-outlook-exchange-email-attachments-coming-through-as-att


On Feb 11, 2020, at 2:55 AM, Kapil Dev Sharma <kapildev.sharma at onsumaye.com<mailto:kapildev.sharma at onsumaye.com>> wrote:

Hi,

We allow users to send HTML or attachments and also we have msg_header
completed empty but mail also have an attachment like ATT00001.txt, It's
from mailman side or any other setting which we have to do. Please suggest!


Thanks,
Kapil Dev Sharma



On Tue, Feb 4, 2020 at 2:57 AM Mark Sapiro <mark at msapiro.net<mailto:mark at msapiro.net>> wrote:

On 2/3/20 5:43 AM, Kapil Dev Sharma wrote:
Hi Team,

We are using mailman 2.1.29. When sending the mail using Mailman, The
email
body content is sent as an attachment (ATT00001.txt). We face this type
of
issues only in outlook. Could you please suggest us the solution for the
same.


What does your list do to this mail. I.e. have you set from_is_list or
dmarc_moderation_action to Wrap Message?

Actually, the most likely explanation is the list has set Non-digest
options -> msg_header, and the incoming message (after content
filtering) is other than a single text/plain part. This will cause the
msg_header to be added as a separate MIME part preceding the rest of the
message. If that is the reason, you may be able to adjust the list's
content filtering using things like pass_mime_types,
collapse_alternatives and convert_html_to_plaintext to ensure the
filtered message is a single text/plain part.

However, if you want to allow HTML, and or attachments, you will need to
ensure that Non-digest options -> msg_header is completely empty, or use
a mail client that is better at displaying inline text in line.

--
Mark Sapiro <mark at msapiro.net<mailto:mark at msapiro.net>>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan
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--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs