Gitlab receives emails, but does not process them

Hello everyone!

I have a strange problem with gitlab
Gitlab receives emails, even deletes them after reading, but does not create comments on merge requests, does not create issues and does not add tasks to the service desk
Set up iredmail as a mail server
I removed the “-m${extension}” flag in the iredmail settings

gitlab.rb config:

gitlab_rails['incoming_email_enabled'] = true

gitlab_rails['incoming_email_address'] = "gitlab+%{key}@mail.server"
gitlab_rails['incoming_email_email'] = "gitlab@mail.server"
gitlab_rails['incoming_email_password'] = "secret"

gitlab_rails['incoming_email_host'] = "zimbra.mail.server"
gitlab_rails['incoming_email_port'] = 143
gitlab_rails['incoming_email_ssl'] = false
gitlab_rails['incoming_email_start_tls'] = false

gitlab_rails['incoming_email_mailbox_name'] = "INBOX"
gitlab_rails['incoming_email_idle_timeout'] = 60
gitlab_rails['incoming_email_log_file'] = "/var/log/gitlab/mailroom/mail_room_json.log"

gitlab_rails['incoming_email_delete_after_delivery'] = true
gitlab_rails['incoming_email_expunge_deleted'] = true