Sending email with /usr/lib/cyrus-imapd/deliver fails with code 75

Resolves: #2021532

cyrus-imapd.spec

@@ -14,7 +14,7 @@
 
 Name: cyrus-imapd
 Version: 3.4.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 
 
 %define ssl_pem_file_prefix /etc/pki/%name/%name
@@ -56,6 +56,7 @@ Patch2: patch-cyrus-rename-quota
 Patch4: patch-cyrus-perl-linking
 
 Patch5: cyrus-imapd-CVE-2021-33582.patch
+Patch6: fix-broken-delivery-to-shared-mailboxes.patch
 
 Source10: cyrus-imapd.logrotate
 Source11: cyrus-imapd.pam-config
@@ -661,6 +662,10 @@ getent passwd cyrus >/dev/null || /usr/sbin/useradd -c "Cyrus IMAP Server" -d /v
 
 
 %changelog
+* Wed Nov 24 2021 Martin Osvald <mosvald@redhat.com> - 3.4.1-6
+- Sending email with /usr/lib/cyrus-imapd/deliver fails with code 75
+- Resolves: #2021532
+
 * Wed Nov 03 2021 Martin Osvald <mosvald@redhat.com> - 3.4.1-5
 - Add fix for CVE-2021-33582
 - Resolves: #1994034

fix-broken-delivery-to-shared-mailboxes.patch

@@ -0,0 +1,25 @@
+commit a8ccdaf109b85cedfd609678d95f7b7d5fdb91f5
+Author: ellie timoney <ellie@fastmail.com>
+Date:   Mon Jun 7 12:00:27 2021 +1000
+
+    lmtpd: shared mailboxes don't have conversations to lock
+    
+    Fixes #3488
+
+diff --git a/imap/lmtpd.c b/imap/lmtpd.c
+index 498bb8765..dc9ca21bc 100644
+--- a/imap/lmtpd.c
++++ b/imap/lmtpd.c
+@@ -843,8 +843,10 @@ int deliver(message_data_t *msgdata, char *authuser,
+             // lock conversations for the duration of delivery, so nothing else can read
+             // the state of any mailbox while the delivery is half done
+             struct conversations_state *state = NULL;
+-            r = conversations_open_user(mbname_userid(mbname), 0/*shared*/, &state);
+-            if (r) goto setstatus;
++            if (mbname_userid(mbname)) {
++                r = conversations_open_user(mbname_userid(mbname), 0/*shared*/, &state);
++                if (r) goto setstatus;
++            }
+ 
+             /* local mailbox */
+             mydata.cur_rcpt = n;