>> I want postfix not to discard the message imediatly when a mailbox is >> full, i mean when postfix tries to deliver it to dovecot lmtp.
> if you set "quota_full_tempfail" to "yes" in dovecots lda.conf, it > should answer with a temporary failure-code 422 instead of permanent > 522. (at least the code of lmtp_local_rcpt_reply_overquota() says so) Here's another possibility, via Postfix's configuration: # Convert over quota to temporary failure. lmtp_delivery_status_filter = pcre:/local/data/postfix/pcre_lmtp_dsn_filter lmtp_reply_filter = pcre:/local/data/postfix/pcre_lmtp_dsn_filter # warn sender if temporarily undeliverable, just like sendmail would. delay_warning_time = 4h ... where pcre_lmtp_dsn_filter contains something like this, adapted as needed to the actual messages generated at your site: # Convert 5xx permanent failure to 4xx temporary failure: /^5(\d\d) 5(\.\d+\.\d+ \S+ Not enough disk quota)/ 4$1 4$2 Anne. -- Ms. Anne Bennett, Senior Sysadmin, ENCS, Concordia University, Montreal H3G 1M8