<html><head></head><body><div style="font-family: 'Calibri', 'Calibri'; font-size: 11pt; color: rgba(0, 0, 0, 1.0);"><div>I've been happily running Dovecot on my Mac for many years (installed via Homebrew). After upgrading to Monterey (MacOS 12.01), it no longer starts:<br/><br/>$ sw_vers<br/>ProductName: macOS<br/>ProductVersion: 12.0.1<br/>BuildVersion: 21A559<br/><br/>$ uname -a<br/>Darwin dfelicia-mac 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 x86_64<br/><br/>$ sudo dovecot -F<br/>Oct 27 10:11:18 service(log): Fatal: setrlimit(RLIMIT_DATA, 268435456): Invalid argument<br/><br/>$ mount<br/>/dev/disk1s2s1 on / (apfs, sealed, local, read-only, journaled)<br/>devfs on /dev (devfs, local, nobrowse)<br/>/dev/disk1s5 on /System/Volumes/VM (apfs, local, noexec, journaled, noatime, nobrowse)<br/>/dev/disk1s3 on /System/Volumes/Preboot (apfs, local, journaled, nobrowse)<br/>/dev/disk1s6 on /System/Volumes/Update (apfs, local, jour
naled, nobrowse)<br/>/dev/disk1s1 on /System/Volumes/Data (apfs, local, journaled, nobrowse)<br/><br/>$ sudo dovecot -n<br/># 2.3.16 (7e2e900c1a): /usr/local/etc/dovecot/dovecot.conf<br/># Pigeonhole version 0.5.16 (09c29328)<br/># OS: Darwin 21.1.0 x86_64 apfs<br/># Hostname: dfelicia-mac<br/>default_internal_group = mail<br/>default_internal_user = _dovecot<br/>default_login_user = _dovenull<br/>first_valid_uid = 100<br/>listen = 127.0.0.1<br/>log_path = /var/log/dovecot.log<br/>mail_location = maildir:/usr/local/var/mail/%u<br/>managesieve_notify_capability = mailto<br/>managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext<br/>namespace inbox {<br/> inbox = yes<br/> location =<br/> mailbox Drafts {<br/> special_use = \Drafts<br/> }<br/> mailbox Junk {<br/> special
_use = \Junk<br/> }<br/> mailbox Sent {<br/> special_use = \Sent<br/> }<br/> mailbox "Sent Messages" {<br/> special_use = \Sent<br/> }<br/> mailbox Trash {<br/> special_use = \Trash<br/> }<br/> prefix =<br/>}<br/>passdb {<br/> args = login<br/> driver = pam<br/>}<br/>protocols = imap<br/>service imap-login {<br/> inet_listener imap {<br/> address = 127.0.0.1<br/> port = 143<br/> }<br/> inet_listener imaps {<br/> address = 127.0.0.1<br/> ssl = no<br/> }<br/>}<br/>ssl = no<br/>userdb {<br/> driver = passwd<br/>}<br/><br/>$ ulimit -Ha<br/>core file size (blocks, -c) unlimited<br/>data seg size (kbytes, -d) unlimited<br/>file size (blocks, -f) unlimited<br/>max locked memory (kbytes, -l) unlimited<br/>max memory size (kbytes, -m) unlimited<br/>open files (-n) unlimited<br/>pipe size (512 bytes, -p) 1<br/>stack size (kbytes, -s) 65532<br/>cpu time
(seconds, -t) unlimited<br/>max user processes (-u) 2784<br/>virtual memory (kbytes, -v) unlimited<br/><br/><br/></div></div></body></html>