Hello,
I have had a few members' email addresses have the "@" sign replaced by an "=" sign. It has happened to various domains (yahoo, hotmail, gmail, etc).?
A thread has been going on for a few weeks, and then randomly, a member sends a reply, and a bounce back email states that it is undeliverable and reveals the member's address in the error message as having an = sign rather than an @ sign. (e.g., username=yahoo.com)
The reply address displayed in the reply email is:?"User Name - Title via groups.io" <username@...>
DELIVERY REPORT
Reporting-MTA: dns; relay.mailchannels.net
X-Postfix-Queue-ID: C2EDDC19CF
X-Postfix-Sender: rfc822; admin@...
Arrival-Date: Mon, 31 Jul 2023 14:25:05 +0000 (UTC)
?
Final-Recipient: rfc822; username @...
Original-Recipient: rfc822;?username @...
Action: failed
Status: 5.0.0
Remote-MTA: dns; lb02.groups.io
Diagnostic-Code: smtp; 510 The group 'username=yahoo.com' does not exist
NB: I replaced the user's name with username and the admin with domain for privacy.
?
