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rejected email - spoofing

 

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A new user received an email from our group successfully, but when she replied to it, she got a mail delivery failure, stating that

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This?sender?failed?our?fraud?detection?checks?and?may?not?be?who?they?appear?to?be.?Learn?about?

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Her message does show up on the website just fine.

I am not sure which mailserver is rejecting it, hers or the groups. Since none of the other group members received it, I would think that it was the groups.io server rejecting her response. But she is using her work email, and I know a lot of corporations can sometimes block really useful things (e.g. she can't go on dropbox etc).

Including screencap of her failure message. I blacked out her email address for privacy, but it does match what is registered in the group.

Thanks for any help!

-Patti

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Patti,

A new user received an email from our group successfully, but when
she replied to it, she got a mail delivery failure, ...
That doesn't look like a delivery failure notice.

That looks like a notice placed in her reply composition dialog. I think it is really just a warning that Outlook was "concerned" about the sender of the original message (that would be your group's address).

If the blue box at the bottom of the screen shot is the beginning of a quote of the message you sent (to which she's replying) then a mystery to me is why you were listed at the group's address "on behalf of" yourself. Do you use a different email address in that group than here in GMF?

Her message does show up on the website just fine.
...
Since none of the other group members received it, ...
You mean, no other group members reported such a message when they replied? If her message posted to the group's message section then it should have gone also to any members that receive group postings.

Shal
 

Shal,

You may be right about it being a warning in the composition dialog. I will check with the user. She may have forwarded me her "sent" message, as she had already deleted the delivery failure notice.
Yes, the blue box is the message to which she was replying, I assumed that the "on behalf of" was standard protocol - "Patti Bennett" is my display name in the Group Profile. I use the same email address in both forums. She is actually replying to my reply of the initial message. That might be a big clue, is it flagging MY reply as spoofed?
The other group members did not receive her reply, but it *is* in the messages section on the website. I guess that means that it could not have been just a warning in her composition dialog??

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