I am using the Postfix+Cyrus+Procmail combination (Cyrus version 2.14) and in my /etc/imapd.conf I have set 'lmtp_downcase_rcpt: yes'
Postfix is handing mail to Procmail for delivery but when email arrives that has upper-case usernames, Procmail is unable to deliver it. Is this a Procmail problem? Cyrus does not report errors, only Procmail reports errors because it can't find the user's directory. Fortunately, most of the mail that has upper-case letters in the user name is spam. thanks -- Andrew
