Good morning 

This can be inserted by ANY server between the sender and the recipient. You 
have, afaik, no chance to find out which server this was. And I think it 
wouldn’t help anyway since you cannot take influence on the way which the 
messages travels. 

Christian

Hello Adam Morris. On Wed, 8 Dec 2021 17:10:13 +1100, you wrote:
> Hi all,
> I realised I asked about this recently.
> on lists I run I don't have this appearing in subject lines where 
> messages are sent from g mail and other domains.
> For a list I don't run messages sent from g mail and other providers 
> have this in the subject line.
> Wondering what settings need changing on the list this is happening with?
> TIA.
-- 
Christian Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland)      
Hilfe fuer Strassenkinder in Ghana: https://www.chance-for-children.org
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