Lisa Muir wrote: > What is the protocol for smtp where there are multiple recipients for > an email, either multiple to, cc or bcc, and one of the recipients is > rejected at the SMTP submission as being an invalid email address.
The sender (which may be a mail client) submits each address with "RCPT TO". There is no indication during an SMTP session if an address was in a To:, CC:, or BCC header. They're all sent with "RCPT TO". Each address is either accepted or rejected. If an address is rejected, the sender can continue or fail according to its own policy. Most mail servers will continue. They'll create a DSN for the original sender that indicates which address failed. Most mail client will stop if a recipient is rejected. They will indicate the error to the user and allow (or require) the address to be corrected before the message is sent. If I remember correctly, Outlook does not behave like other mail clients. It will continue like a mail server would, and create a notice indicating the failure in the user's Inbox. > If the user then re-submits does it get sent to everyone else again > and again until they delete or fix the error in that one email > address? You probably have a user with Outlook. He probably saw a notice indicating a failure. He probably resent the message to all of the original recipients instead of just the one that needed to be fixed. > This appeared to be how it worked yesterday when a user had a large > bcc email list with one invalid email address. Shouldn't the protocol > be that the message does not get submitted to any of the recipients > until such time as the message is accepted from the sending MUA at > smtp? No. > Or is this an issue which can be fixed with an upgrade, I'm > still on Courier 0.56? Also no. This behavior is independent of the mail server. Outlook would have done the same thing regardless of what SMTP server you were running. ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
