"Recipient of replies to agenda notifications" set, replies not recieved

The "Recipient of replies to agenda notifications" setting has been set to "VP of Education & Toastmaster". When members reply to the sent agenda email, the reply email is not received by anyone. I did a test where i sent out an agenda.
For example, I received an agenda email fro address: "agenda.406104@rtptoastmasters.org". When i hit reply, it sends an email reply to address: "agenda.406104@rtptoastmasters.org".
The "Recipient of replies to agenda notifications" setting had been set to "VP of Education & Toastmaster" and neither the TM or the VP of Ed received this email. Please help me understand the cause of this issue. BTW, this has been this way for several months, thus is not related to the freetoasthost update.
Thanks,
Robert

1) this is not the correct email address

2) you cannot email that email address only reply to it.

3) 406104 is not a valid FTH website number

Please provide your correct club number.

My club number is 4335. Thanks for helping me with this as this is not my forte. I had an error in my post, where I had the wrong email address that the agenda came from. I corrected below in the example.

My confusion is as follows:
In Outlook, when I receive an email from someone and then hit reply, the reply address is the same as the address that the email was received from. When our club members receive an agenda email, such as the most recent one that was from “Rob Matey <agenda@rtptoastmasters.org>”, the reply email had a different email address. It had “agenda.406104@rtptoastmasters.org” in the “to” field.

Thus, I am confused as to why the reply email is not addressed to the same address that the email came from, i.e. “agenda@rtptoastmasters.org”? Is there something set wrong on our website?
Thanks again for helping me with this,
Robert

The reply with the alternate email address is because the email has to be matched to the exact agenda.

You can only reply as there is secret coding in the header that needs to be there to allow the email through

When I hit reply to the agenda email, why does it not put the correct email address in the reply email?

Robert,

I am the system developer. This is as designed, and it must be this way.

People assume that the reply-to email address will always be the same as the from email address. That is incorrect. I can set a different address for replies than for the from address. This is perfectly valid for email.

The from email address for agendas must always be the same so that people can whitelist that email address in their spam filters. If it changed, then it those emails would not be recognized by the spam filter and would be filtered out.

In our case, because we have different types of replies that we allow for agendas, we need to put a reference number for the actual agenda somewhere in the email header or body. This is because when the replies come back to our system, the email system has to be able to figure out what agenda the reply is associated with so that a reply can be processed for the Toastmaster of that meeting, if the agenda replies setting says that the Toastmaster always gets a reply. That is what the number is in the reply email address--it is a reference number that allows the system to figure out exactly which agenda the reply is associated with. No number... no replies to Meeting Toastmasters.

We had tried several other approaches for including this reference number. The old way was to put it at the beginning of the subject line, but people kept deleting that from the subject and then complaining to us that the Toastmaster was not getting replies (no coincidence).

I had changed it to put the reference # in the email heading as a hidden field, but then discovered that some email providers were removing it.

So... now that reference # is part of the reply to email address. (My latest approach.) That is why that email address must be different and the from address must always be the same.

We cannot simply put people's real email addresses in these emails since frequently agendas are forwarded to non-members and that would mean members email addresses could end up on spam lists. Privacy and email security are big priorities for us.