Hello, https://www.cyrusimap.org/dev/imap/installing.html#integration-with-sendmail contains now updated instructions about how to integrate Sendmail and Cyrus IMAP. The primary purpose is to avoid accepting emails during the SMTP dialog, if the email cannot be delivered later to Cyrus IMAP. The manual considers both aliases and virtusertable. If a Cyrus IMAP mailbox exists in a virtual domain, that mailbox does not have to be included explicitly in the aliases or virtusertable, in order to accept mails for it. I have not performed a test, whether the m-mailer flag in this configuration ensures that mails to many recipients are passed over a single LTMP transaction. It is possible that in such cases many LMTP LMTP transacations happen. Greetings Дилян ------------------------------------------ Cyrus: Info Permalink: https://cyrus.topicbox.com/groups/info/Te6012d88ab244941-M77f2f469a04d4253cbba9b0e Delivery options: https://cyrus.topicbox.com/groups/info/subscription