static void *imap_sieve_smtp_start (const struct sieve_script_env *senv, const char *return_path) { struct imap_sieve_context *isctx = (struct imap_sieve_context *)senv->script_context; return (void *)smtp_client_init (isctx->isieve->lda_set, return_path); }
int mail_send_rejection(struct mail_deliver_context *ctx, const char *recipient, const char *reason) { struct mail *mail = ctx->src_mail; struct istream *input; struct smtp_client *smtp_client; struct ostream *output; const char *return_addr, *hdr; const char *value, *msgid, *orig_msgid, *boundary, *error; string_t *str; int ret; if (mail_get_first_header(mail, "Message-ID", &orig_msgid) < 0) orig_msgid = NULL; if (mail_get_first_header(mail, "Auto-Submitted", &value) > 0 && strcasecmp(value, "no") != 0) { i_info("msgid=%s: Auto-submitted message discarded: %s", orig_msgid == NULL ? "" : str_sanitize(orig_msgid, 80), str_sanitize(reason, 512)); return 0; } return_addr = mail_deliver_get_return_address(ctx); if (return_addr == NULL) { i_info("msgid=%s: Return-Path missing, rejection reason: %s", orig_msgid == NULL ? "" : str_sanitize(orig_msgid, 80), str_sanitize(reason, 512)); return 0; } if (mailbox_get_settings(mail->box)->mail_debug) { i_debug("Sending a rejection to %s: %s", recipient, str_sanitize(reason, 512)); } smtp_client = smtp_client_init(ctx->set, NULL); smtp_client_add_rcpt(smtp_client, return_addr); output = smtp_client_send(smtp_client); msgid = mail_deliver_get_new_message_id(ctx); boundary = t_strdup_printf("%s/%s", my_pid, ctx->set->hostname); str = t_str_new(512); str_printfa(str, "Message-ID: %s\r\n", msgid); str_printfa(str, "Date: %s\r\n", message_date_create(ioloop_time)); str_printfa(str, "From: Mail Delivery Subsystem <%s>\r\n", ctx->set->postmaster_address); str_printfa(str, "To: <%s>\r\n", return_addr); str_append(str, "MIME-Version: 1.0\r\n"); str_printfa(str, "Content-Type: " "multipart/report; report-type=%s;\r\n" "\tboundary=\"%s\"\r\n", ctx->dsn ? "delivery-status" : "disposition-notification", boundary); str_append(str, "Subject: "); var_expand(str, ctx->set->rejection_subject, get_var_expand_table(mail, reason, recipient)); str_append(str, "\r\n"); str_append(str, "Auto-Submitted: auto-replied (rejected)\r\n"); str_append(str, "Precedence: bulk\r\n"); str_append(str, "\r\nThis is a MIME-encapsulated message\r\n\r\n"); /* human readable status report */ str_printfa(str, "--%s\r\n", boundary); str_append(str, "Content-Type: text/plain; charset=utf-8\r\n"); str_append(str, "Content-Disposition: inline\r\n"); str_append(str, "Content-Transfer-Encoding: 8bit\r\n\r\n"); var_expand(str, ctx->set->rejection_reason, get_var_expand_table(mail, reason, recipient)); str_append(str, "\r\n"); if (ctx->dsn) { /* DSN status report: For LDA rejects. currently only used when user is out of quota */ str_printfa(str, "--%s\r\n" "Content-Type: message/delivery-status\r\n\r\n", boundary); str_printfa(str, "Reporting-MTA: dns; %s\r\n", ctx->set->hostname); if (mail_get_first_header(mail, "Original-Recipient", &hdr) > 0) str_printfa(str, "Original-Recipient: rfc822; %s\r\n", hdr); str_printfa(str, "Final-Recipient: rfc822; %s\r\n", recipient); str_append(str, "Action: failed\r\n"); str_printfa(str, "Status: %s\r\n", ctx->mailbox_full ? "5.2.2" : "5.2.0"); } else { /* MDN status report: For Sieve "reject" */ str_printfa(str, "--%s\r\n" "Content-Type: message/disposition-notification\r\n\r\n", boundary); str_printfa(str, "Reporting-UA: %s; Dovecot Mail Delivery Agent\r\n", ctx->set->hostname); if (mail_get_first_header(mail, "Original-Recipient", &hdr) > 0) str_printfa(str, "Original-Recipient: rfc822; %s\r\n", hdr); str_printfa(str, "Final-Recipient: rfc822; %s\r\n", recipient); if (orig_msgid != NULL) str_printfa(str, "Original-Message-ID: %s\r\n", orig_msgid); str_append(str, "Disposition: " "automatic-action/MDN-sent-automatically; deleted\r\n"); } str_append(str, "\r\n"); /* original message's headers */ str_printfa(str, "--%s\r\nContent-Type: message/rfc822\r\n\r\n", boundary); o_stream_nsend(output, str_data(str), str_len(str)); if (mail_get_hdr_stream(mail, NULL, &input) == 0) { /* Note: If you add more headers, they need to be sorted. We'll drop Content-Type because we're not including the message body, and having a multipart Content-Type may confuse some MIME parsers when they don't see the message boundaries. */ static const char *const exclude_headers[] = { "Content-Type" }; input = i_stream_create_header_filter(input, HEADER_FILTER_EXCLUDE | HEADER_FILTER_NO_CR | HEADER_FILTER_HIDE_BODY, exclude_headers, N_ELEMENTS(exclude_headers), *null_header_filter_callback, (void *)NULL); ret = o_stream_send_istream(output, input); i_stream_unref(&input); i_assert(ret != 0); } str_truncate(str, 0); str_printfa(str, "\r\n\r\n--%s--\r\n", boundary); o_stream_nsend(output, str_data(str), str_len(str)); if ((ret = smtp_client_deinit(smtp_client, &error)) < 0) { i_error("msgid=%s: Temporarily failed to send rejection: %s", orig_msgid == NULL ? "" : str_sanitize(orig_msgid, 80), str_sanitize(error, 512)); } else if (ret == 0) { i_info("msgid=%s: Permanently failed to send rejection: %s", orig_msgid == NULL ? "" : str_sanitize(orig_msgid, 80), str_sanitize(error, 512)); } return ret < 0 ? -1 : 0; }