Приветствую. При использовании модуля mail периодически возникает ошибка, суть которой

Question

Приветствую. При использовании модуля mail периодически возникает ошибка, суть которой

вроде бы понятна, а с другой стороны не понятна причина. Куда копнуть?
- hosts: [hostname]
tasks:
- name: Send email with list of passwords
mail:
host: localhost
port: 25
from: ansible@example.ru
to: "{{ lookup('env','RECIPIENTS') }}"
subject: "Password Changer ({{ ansible_date_time.day}}-{{ ansible_date_time.month}}-{{ ansible_date_time.year}})"
attach: /tmp/passwords.txt
body: "Passwords are in Vault."
run_once: true
tags: send-email

Текст ошибки
TASK [Send email with list of passwords] ***************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: socket.error: [Errno 111] Connection refused
fatal: [hostname]: FAILED! => {"changed": false, "module_stderr": "Traceback (most recent call last):\n File \"<stdin>\", line 102, in <module>\n File \"<stdin>\", line 94, in _ansiballz_main\n File \"<stdin>\", line 40, in invoke_module\n File \"/usr/lib64/python2.7/runpy.py\", line 176, in run_module\n fname, loader, pkg_name)\n File \"/usr/lib64/python2.7/runpy.py\", line 82, in _run_module_code\n mod_name, mod_fname, mod_loader, pkg_name)\n File \"/usr/lib64/python2.7/runpy.py\", line 72, in _run_code\n exec code in run_globals\n File \"/tmp/ansible_mail_payload_vahxBn/ansible_mail_payload.zip/ansible/modules/notification/mail.py\", line 398, in <module>\n File \"/tmp/ansible_mail_payload_vahxBn/ansible_mail_payload.zip/ansible/modules/notification/mail.py\", line 286, in main\n File \"/usr/lib64/python2.7/smtplib.py\", line 315, in connect\n self.sock = self._get_socket(host, port, self.timeout)\n File \"/usr/lib64/python2.7/smtplib.py\", line 290, in _get_socket\n return socket.create_connection((host, port), timeout)\n File \"/usr/lib64/python2.7/socket.py\", line 571, in create_connection\n raise err\nsocket.error: [Errno 111] Connection refused\n", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}