Ruby on Rails mailcatcherでメールが送られてこない原因・解決策を教えてください。

Question

前提・実現したいこと

現在「現場で使えるRuby on Rails5」を使ってRailsを勉強しており、Todoアプリの中でmailcatcherでテストメールを送れるようになりたいです。

発生している問題・エラーメッセージ

エラー等は発生してないのですが、なぜかテストメールが送られてこないです。
mailcatcherを使用しております。
Todoリスト登録が完了したら、タスク登録の完了メールを送るようにしていますが、メールが送られてきません。
コード等も間違ってないと思います。
原因が分かる方がおりましたら、ご教示いただけないでしょうか。
よろしくお願いいたします。

該当のソースコード

development.rb

require "active_support/core_ext/integer/time"

Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded any time
  # it changes. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

  # Show full error reports.
  config.consider_all_requests_local = true

  # Enable/disable caching. By default caching is disabled.
  # Run rails dev:cache to toggle caching.
  if Rails.root.join('tmp', 'caching-dev.txt').exist?
    config.action_controller.perform_caching = true
    config.action_controller.enable_fragment_cache_logging = true

    config.cache_store = :memory_store
    config.public_file_server.headers = {
      'Cache-Control' => "public, max-age=#{2.days.to_i}"
    }
  else
    config.action_controller.perform_caching = false

    config.cache_store = :null_store
  end

  # Store uploaded files on the local file system (see config/storage.yml for options).
  config.active_storage.service = :local

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = false
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {address: '127.0.0.1',port: 1025}

  config.action_mailer.perform_caching = false

  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise exceptions for disallowed deprecations.
  config.active_support.disallowed_deprecation = :raise

  # Tell Active Support which deprecation messages to disallow.
  config.active_support.disallowed_deprecation_warnings = []

  # Raise an error on page load if there are pending migrations.
  config.active_record.migration_error = :page_load

  # Highlight code that triggered database queries in logs.
  config.active_record.verbose_query_logs = true

  # Debug mode disables concatenation and preprocessing of assets.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = true

  # Suppress logger output for asset requests.
  config.assets.quiet = true

  # Raises error for missing translations.
  # config.i18n.raise_on_missing_translations = true

  # Annotate rendered view with file names.
  # config.action_view.annotate_rendered_view_with_filenames = true

  # Use an evented file watcher to asynchronously detect changes in source code,
  # routes, locales, etc. This feature depends on the listen gem.
  # config.file_watcher = ActiveSupport::EventedFileUpdateChecker

  # Uncomment if you wish to allow Action Cable access from any origin.
  # config.action_cable.disable_request_forgery_protection = true
end

application_mailer.rb

class ApplicationMailer < ActionMailer::Base
  default from: "[e-mail]"
  layout "mailer"
end

task_mailer.rb

class TaskMailer < ApplicationMailer
  def creation_email(task)
    @task = task
    mail(
      subject: 'タスク作成完了',
      to: '[e-mail]',
      from: '[e-mail]'
    )
  end
end

tasks_controller.rb

class TasksController < ApplicationController
  before_action :set_task, only: [:show, :edit, :update, :destroy]

  def index
    @q = current_user.tasks.ransack(params[:q])
    @tasks = @q.result(distinct: true)
  end

  def show
  end

  def new
    @task = Task.new
  end

  def edit
  end

  def create
    @task = current_user.tasks.new(task_params)

    if params[:back].present?
      render :new
      return
    end

    if @task.save
      TaskMailer.creation_email(@task).deliver_now
      redirect_to tasks_url, notice: "タスク「#{@task.name}」を登録しました。"
    else
      render "new"
    end
  end

  def update
    @task.update!(task_params)
    redirect_to task_url, notice: "タスク「#{@task.name}」を更新しました。"
  end

  def destroy
    @task.destroy
    redirect_to tasks_url, notice: "タスク「#{@task.name} 」を削除しました。"
  end

  def confirm_new
    @task = current_user.tasks.new(task_params)
    render :new unless @task.valid?
  end

  private

  def task_params
    params.require(:task).permit(:name, :description)
  end

  def set_task
    @task = current_user.tasks.find(params[:id])
  end
end

creation_email.html.slim

| 以下のタスクを作成しました

ul 
  li 
    | 名称:
    = @task.name
  li 
    | 詳しい説明
    = simple_format(@task.description)

creation_email.text.slim

| 以下のタスクを作成しました
= "\n"
| 名称:
= @task.name
= "\n"
| 詳しい説明:
= "\n"
= @task.description

####ログ

Started POST "/tasks" for 127.0.0.1 at 2021-09-16 20:57:12 +0900
Processing by TasksController#create as HTML
  Parameters: {"authenticity_token"=>"[FILTERED]", "task"=>{"name"=>"一覧表示機能の実装", "description"=>"一覧アクションと一覧画面を実装する"}, "commit"=>"登録"}
  User Load (0.6ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?  [["id", 3], ["LIMIT", 1]]
  ↳ app/controllers/application_controller.rb:8:in `current_user'
  TRANSACTION (0.1ms)  begin transaction
  ↳ app/controllers/tasks_controller.rb:27:in `create'
  Task Create (7.9ms)  INSERT INTO "tasks" ("name", "description", "created_at", "updated_at", "user_id") VALUES (?, ?, ?, ?, ?)  [["name", "一覧表示機能の実装"], ["description", "一覧アクションと一覧画面を実装する"], ["created_at", "2021-09-16 11:57:12.167880"], ["updated_at", "2021-09-16 11:57:12.167880"], ["user_id", 3]]
  ↳ app/controllers/tasks_controller.rb:27:in `create'
  TRANSACTION (6.2ms)  commit transaction
  ↳ app/controllers/tasks_controller.rb:27:in `create'
  Rendering layout layouts/mailer.html.slim
  Rendering task_mailer/creation_email.html.slim within layouts/mailer
  Rendered task_mailer/creation_email.html.slim within layouts/mailer (Duration: 0.8ms | Allocations: 280)
  Rendered layout layouts/mailer.html.slim (Duration: 2.4ms | Allocations: 365)
  Rendering layout layouts/mailer.text.slim
  Rendering task_mailer/creation_email.text.slim within layouts/mailer
  Rendered task_mailer/creation_email.text.slim within layouts/mailer (Duration: 0.3ms | Allocations: 52)
  Rendered layout layouts/mailer.text.slim (Duration: 2.2ms | Allocations: 128)
TaskMailer#creation_email: processed outbound mail in 14.5ms
Delivered mail [e-mail] (4132.4ms)
Date: Thu, 16 Sep 2021 20:57:12 +0900
From: [e-mail]
To: [e-mail]
Message-ID: <[e-mail]>
Subject: =?UTF-8?Q?=E3=82=BF=E3=82=B9=E3=82=AF=E4=BD=9C=E6=88=90=E5=AE=8C=E4=BA=86?=
Mime-Version: 1.0
Content-Type: multipart/alternative;
 boundary="--==_mimepart_614331183515c_4fdc39584755f";
 charset=UTF-8
Content-Transfer-Encoding: 7bit


----==_mimepart_614331183515c_4fdc39584755f
Content-Type: text/plain;
 charset=UTF-8
Content-Transfer-Encoding: base64

5Lul5LiL44Gu44K/44K544Kv44KS5L2c5oiQ44GX44G+44GX44GfDQrlkI3n
p7A65LiA6Kan6KGo56S65qmf6IO944Gu5a6f6KOFDQroqbPjgZfjgYToqqzm
mI46DQrkuIDopqfjgqLjgq/jgrfjg6fjg7PjgajkuIDopqfnlLvpnaLjgpLl
rp/oo4XjgZnjgos=

----==_mimepart_614331183515c_4fdc39584755f
Content-Type: text/html;
 charset=UTF-8
Content-Transfer-Encoding: base64

PGh0bWw+PGJvZHk+5Lul5LiL44Gu44K/44K544Kv44KS5L2c5oiQ44GX44G+
44GX44GfPHVsPjxsaT7lkI3np7A65LiA6Kan6KGo56S65qmf6IO944Gu5a6f
6KOFPC9saT48bGk+6Kmz44GX44GE6Kqs5piOPHA+5LiA6Kan44Ki44Kv44K3
44On44Oz44Go5LiA6Kan55S76Z2i44KS5a6f6KOF44GZ44KLPC9wPjwvbGk+
PC91bD48L2JvZHk+PC9odG1sPg==

----==_mimepart_614331183515c_4fdc39584755f--

試したこと

エラー等も起きてないため、何をしていいか分からずで
mailcatcherを再起動したぐらいになります。

補足情報（FW/ツールのバージョンなど）

Windows 10
Ruby 3.0.2
Rails 6.1.4.1
yarn 1.22.10

Comments

[neko_daisuki]

bin/rails c して、以下を打つと development.rb と合った内容が返ってきますか？
ActionMailer::Base.delivery_method
ActionMailer::Base.smtp_settings

[nishino.michiya]

はい！
返ってきます！

[neko_daisuki]

mailcatcher に -f を付けて起動してメールを送信すると
SMTP: Received message from ... と表示されますか？

[nishino.michiya]

mailcatcherに-fを付けるとエラーが起きてしまいます。
エラーは以下の通りです。

mailcatcher -f
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:156:in `block in parse!': invalid option: -f (OptionParser::InvalidOption)
from <internal:kernel>:90:in `tap'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:89:in `parse!'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:164:in `run!'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/bin/mailcatcher:6:in `<top (required)>'
from C:/Ruby30-x64/bin/mailcatcher:23:in `load'
from C:/Ruby30-x64/bin/mailcatcher:23:in `<main>'
C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:156:in `block in parse!': invalid option: f (OptionParser::InvalidOption)
from <internal:kernel>:90:in `tap'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:89:in `parse!'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/lib/mail_catcher.rb:164:in `run!'
from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mailcatcher-0.8.1/bin/mailcatcher:6:in `<top (required)>'
from C:/Ruby30-x64/bin/mailcatcher:23:in `load'
from C:/Ruby30-x64/bin/mailcatcher:23:in `<main>'

[neko_daisuki]

windows だと -f オプションが使えないんですね。
自分の環境だと -f の有無に関わらず mailcatcher の 起動ができませんでした・・・