Club Secretary unable to send out emails to members and guests

So what is the solution? Using gmail accounts or using yahoo but sending to one list at a time? I am looking for the least disruptive solution.

I can confirm that we do not send Bounce Messages for the duplicate Yahoo Message IDs.
I am not sure what Bounce Message that we could send that would be meaningful to the user though...
If anyone has any suggestions for an appropriate bounce message, I am all ears.

I think part of this may have to do with how Yahoo! email parses the To line.

For example, if it sees two email addresses in the To line, it may send two email different email messages with the same message ID which is the root of the problem, I think.

svavantsa wrote: So what is the solution? Using gmail accounts or using yahoo but sending to one list at a time? I am looking for the least disruptive solution.

I think sending to one list at a time is probably the best approach. I will be working to try to come up with a more elegant work around for the Yahoo email issues in the future, but for now, one list at a time.

She can pick either solution for now. change her email to someone like gmail or just send to one list at a time.

Looking at the logs, does it look like the email went out to some but not all?

no email went out from the yahoo email address when sent to both members and guests together.