Hi RT gurus,
I have a situation where emails from RT are going into SOME ISP email inboxes but not others. Gmail & Hotmail are OK, however, Optusnet and others are being filtered out as spam with the following message:
Unknown address error (‘453’, [’#4.1.8 Domain of sender address <email@example.com:firstname.lastname@example.org> does not exist’]) 
Is there somewhere where the config allows me to change the sender address to something like email@example.com:firstname.lastname@example.org?
I have set the following email address into my Queue config for “Reply Address” and “Comment Address”, but as far as I can tell it doesn’t seem to control that:
Once again, any assistance would be greatly appreciated.
Many thanks and regards
Jo Keown, MBusAdmin(Mgt), MIPA
IS Business Analyst
Colorado Group Ltd
100 Melbourne Street
South Brisbane QLD 4101
Ph: +61 7 3877 3399
Mobile: 0402 697 351
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