Hi all, We have a PHP script that : - looks for new email in mailbox - check if sender is on authorize list (to threat email) - do several things based on body content - mark email as SEEN - move to OK or FAILED folders (imap) Some senders require a DSN using this header tag in their email : Code: X-Confirm-Reading-To: <[email protected]> So we would like to generate the 'return receipt read' to original sender. Despite seeking for solution, I haven't found yet an option to proceed this from a PHP script. Server is Ubuntu 18.04 LTS ISPConfig 3.2.5 (the receiver mailbox is a catchall one for receiver domain, so custom rules may be applied) postfix v3.3.0 dovecot 2.2.33.2 php 7.2 (can be adjusted if needed) Thanks in advance for your thoughts ! The basics of the php script : Code: $sender_email = '[email protected]'; $mailbox = imap_open($host, $username, $password) or die("Connection failed : " . imap_last_error()); $mailbox_check = imap_search($mailbox, 'UNSEEN FROM "' . $sender_email . '"', SE_UID); if ($mailbox_check) { foreach ($mailbox_check as $key => $uid) { $info = imap_fetch_overview($mailbox, $uid, FT_UID); foreach ($info as $overview) { $msgno = $overview->msgno; /** do job on email there : done */ $email_status = imap_setflag_full($mailbox, "$msgno", "\\Seen"); /** send DSN to sender : how-to ? */ imap_mail_move($mailbox, $uid, "INBOX.OK", CP_UID); } } }
You would need to generate the email to send and send it via smtp. I don't know exactly what such a reply looks like, but you could generate one with a regular mail client as an example, or search for how to construct one from a message you have received.
Hi Jesse, I thought a library or such exists to accomplish this, but it doesn't seem. I'll forge the DSN. Thanks !
