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Messages sent from Sympa list name "on behalf of" original sender

Number of views : 4
Article Number : KB0016996
Published on : 2020-07-08
Last modified : 2020-07-08 15:45:46
Knowledge Base : IT Public Self Help

Sender Header

Many new features in Sympa 6.2 are in support of modern anti-spam and
email validation standards such as DKIM (DomainKeys), DMARC
(Domain-based Message Authentication, Reporting and Conformance) and SPF
(Sender Protected From).

One such new feature is the addition of a "Sender:" header to each
message distributed by Sympa. Per current practice, this header
explicitly indicates that the message was distributed to the mailing
list by Sympa at the request of the original sender.

Accordingly, as of the UT Lists upgrade on June 2nd, 2018,
Outlook/Exchange users will see mailing list messages as being sent by
the mailing list's administrative address "on behalf of" the original
sender address. This also also affects mail filtering rules; the message
is now treated as being from the mailing list itself.

Outlook/Exchange users can adjust their filtering rules in one of two
ways to account for this change:

  • revise the "message is from" rule to specify the list name itself
  • use the "text appears in message headers" rule to look for the "From:"
    and "To:" headers explicitly

 

Outlook Address List Cache

Sometimes list messages to a small workgroup may not be received by the whole
group, because some are being inadvertently sent to the address
LISTNAME-request@utlists.utexas.edu. This "-request" address does not
distribute to the list, nor does it alert the sender that they made any kind of
mistake.

This address is intended to be used by people wanting to “request” something from
the list owners/moderators, so it is only sent to them and does not get sent to
the entire list.

For some users, the “request” address is getting cached in the Outlook
address list. When you open up a new window and start typing the list name, one
of the options that pops up as autocomplete results is that “request”
address, as shown here:

Outlook users can remove the -request list from the address cache by clicking
the "X" button next to the address.

 

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