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550 Sender IP reverse lookup rejected #invitation

 

Hello GMF,

First, first time poster here.? If this is not the right place for this, please advise.?

?

I recently set up a couple of different groups and all is going well!? ¡­ except for one user who works for a city.? She has never been able to receive any of our invitations, and their IT commented below.? I am not sure it is really resolved on their end, but wanted to pass this on to see if this is something that needs to be addressed on the groups.io side, or is there better guidance to give to their IT dept.

?

Any suggestions?

?

Regards,

jim

?

From: Information Services HelpDesk <helpspot@...>
Sent: Wednesday, June 26, 2019 10:20 AM
To:?[redacted]@ci.milpitas.ca.gov
Cc: obermail@...
Subject: Re: FW: SCCEMA: Email Invitation Pending? -- Toni {34601}

?

## Reply ABOVE THIS LINE to add a note to this request ##

?

Request Updated


Your IS Helpdesk ticket is being reviewed by our support staff. Please note the information below for any updates:

Toni,

We force-delivered the email that was rejected.? Their IT can probably use the following information to look into it.



Received: from web01.groups.io (web01.groups.io [66.175.222.12])

550 Sender IP reverse lookup rejected

mx:sccema.groups.io?

Pref

Hostname

IP Address

TTL

 ?

10

Linode, LLC (AS63949)

5 min

??????

10

Linode, LLC (AS63949)

5 min

??????

?

Thanks,

Daniel

Best Regards,
Your IS Helpdesk Staff

INFORMATION SERVICES HELPDESK
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[Personal info redacted by moderator]
 

Received: from web01.groups.io (web01.groups.io [66.175.222.12])

550 Sender IP reverse lookup rejected



mx:sccema.groups.io
They say "Sender IP" but they look up domain of Return-Path or "From:". They don't understand what they are talking about.

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