Emails not getting through spam filters of many ISP's due to "Unknown Error"

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 <root@rt.coloradogroup.com.aumailto:root@rt.coloradogroup.com.au> does not exist’]) []

Is there somewhere where the config allows me to change the sender address to something like rt@coloradogroup.com.aumailto:rt@coloradogroup.com.au?

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:

  •     customerservice@dianaferrari.com.au
    

Once again, any assistance would be greatly appreciated.

Many thanks and regards
Jo

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
Email: joanne.keown@coloradogroup.com.aumailto:joanne.keown@coloradogroup.com.au

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No part of this email may be reproduced, adapted or transmitted without the written permission of the owner of the copyright or other intellectual property in it.

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You will need to have a look at your mailserver. Look at masquarading.

Sorry to be so brief, send from my phone.

Joop

Joanne Keown Joanne.Keown@coloradogroup.com.au schreef:

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
<[1]root@rt.coloradogroup.com.au> does not exist’]) []

Is there somewhere where the config allows me to change the sender address to something like
[2]rt@coloradogroup.com.au?

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:

. customerservice@dianaferrari.com.au

Once again, any assistance would be greatly appreciated.

Look at the OutgoingMailFrom options
Keep in mind what it will do to bounces.

-kevin