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In this book you'll learn the technology underlying secure e-mail systems, from the protocols involved to the open source software packages used to implement e-mail security. This book explains the secure MIME (S/MIME) protocol and how it is used to protect data transmitted across the Internet. It also explains the concepts crucial to stopping spam messages using the three most popular open source mail packages--sendmail, qmail, and postfix. It presents detailed configurations showing how to avoid accepting messages from known open relays and how to filter known spam messages. Advanced security topics are also covered, such as how to install and implement virus scanning software on the mail server, how to use SMTP authentication software, and how to use the SSL protocol to secure POP, IMAP, and WebMail servers.

In this book you'll learn the technology underlying secure e-mail systems, from the protocols involved to the open source software packages used to implement e-mail security. This book explains the secure MIME (S/MIME) protocol and how it is used to protect data transmitted across the Internet. It also explains the concepts crucial to stopping spam messages using the three most popular open source mail packages--sendmail, qmail, and postfix. It presents detailed configurations showing how to avoid accepting messages from known open relays and how to filter known spam messages. Advanced security topics are also covered, such as how to install and implement virus scanning software on the mail server, how to use SMTP authentication software, and how to use the SSL protocol to secure POP, IMAP, and WebMail servers.

Safe, Secure and Versatile the Mail Manager Street Safe has a rear locking access door to provide safe mail retrieval from the street. This locking mailbox is designed to ensure user safety, ease of mind and protection against mail theft. The Street Safe is built to last with timeless appeal, featuring a high security bi-cam locking rear access door and heavy-duty construction that Mail Boss is known for. Constructed of heavy galvanized steel and a commercial grade. Color: Granite.

Safe, Secure and Versatile the Mail Manager Street Safe has a rear locking access door to provide safe mail retrieval from the street. This locking mailbox is designed to ensure user safety, ease of mind and protection against mail theft. The Street Safe is built to last with timeless appeal, featuring a high security bi-cam locking rear access door and heavy-duty construction that Mail Boss is known for. Constructed of heavy galvanized steel and a commercial grade powder coating, the Street Safe is sure to provide years of reliable and safe use. Color: Bronze.

Constructed from durable, heavy-duty 16-Gauge galvanized steel, the AdirOffice Ultimate Drop Box Wall Mounted Mail Box is designed for holding keys, cash, envelopes or other important materials that need to be kept for safety purposes. This wall mounted mailbox is great to use for a variety of establishments like retail stores, military facilities, rental facilities, customer service counters, auto dealers and other facilities. With long-lasting strength, the AdirOffice Mail Box is built for security. It features an anti-fishing bin door and an anti-pry latch locking mechanism that prevents theft. Its locking access door features a commercial grade 12-disc wafer lock and 2 laser cut keys that secure the items in place. This powder-coated, scratch-resistant finish mailbox is the most convenient solution for after-hour drop box applications like night drops, key drops, payment drops, interoffice mail and the like. Size: medium. Color: White.

The Kodak Professional Ektachrome E100G is a state-of-the-art color slide film that offers photographers the highest quality in image sharpness, clarity, and color fidelity. Designed for the modern visual artist, this film boasts an extremely fine grain with an rms granularity of 8, ensuring that your photographs exhibit remarkable detail and texture, even when enlarged. The Ektachrome E100G is engineered with Kodak's cutting-edge Color Amplifying Technology and T-GRAIN Emulsion Technology, which work in tandem to efficiently capture light and enhance image quality.With its lower D-min, the Ektachrome E100G ensures that whites in your photographs are whiter and brighter, contributing to a more dynamic and vivid final image. The film's advanced emulsion sensitization provides an extended tonal range, capturing the subtleties from the brightest highlights to the deepest shadows, and improving highlight and shadow detail. This makes it an excellent choice for a wide range of photographic applications, including advertising, fashion, editorial, architecture, and nature/wildlife photography.The Ektachrome E100G features a neutral color balance that offers moderately enhanced color saturation, allowing for natural skin-tone reproduction and consistent gray scale rendition across the tonal range. This neutrality makes it a versatile film suitable for a variety of lighting conditions, including daylight and electronic flash.For those seeking a warmer color balance, the Ektachrome 100GX variant provides a similar level of color saturation with a warm tone, adding a subtle richness to the images that is often desired in portrait and landscape photography.Both films are equipped with a larger notes area on the 35mm magazine, providing photographers with ample space to record exposure or processing information, facilitating better communication with the development lab. Additionally, the image archivability of these films ensures the stability of the original images in dark storage, allowing worry-free access to the images for future use.Included with the Kodak Ektachrome E100G film is a Fujifilm 35mm Slide Film Mailer for 36 Exposure Rolls, making it convenient for photographers to send their film for development with confidence.Capture the world in its truest form with the Kodak Professional Ektachrome E100G Color Slide Film, where every shot is a testament to the enduring legacy of Kodak's photographic excellence.

The mail posts is made from ast aluminum that makes it weatherproof and have an ultra-tough construction. Safety locking access door with 2 keys keeps mail safe. Elegance stylish retro appearance makes it a beautiful scenery decor for your garden or your home, it is also perfect for gift to your families or friends. Simple assemble need and all the hardware include.

Safe, Secure and Versatile the Mail Manager Street Safe has a rear locking access door to provide safe mail retrieval from the street. This locking mailbox is designed to ensure user safety, ease of mind and protection against mail theft. The Street Safe is built to last with timeless appeal, featuring a high security bi-cam locking rear access door and heavy-duty construction that Mail Boss is known for. Constructed of heavy galvanized steel and a commercial grade powder coating, the Street Safe is sure to provide years of reliable and safe use. Color: Black.

The mail posts is made from ast aluminum that makes it weatherproof and have an ultra-tough construction. Safety locking access door with 2 keys keeps mail safe. Elegance stylish retro appearance makes it a beautiful scenery decor for your garden or your home, it is also perfect for gift to your families or friends. Simple assemble need and all the hardware include.

The mail posts is made from ast aluminum that makes it weatherproof and have an ultra-tough construction. Safety locking access door with 2 keys keeps mail safe. Elegance stylish retro appearance makes it a beautiful scenery decor for your garden or your home, it is also perfect for gift to your families or friends. Simple assemble need and all the hardware include.

Upgrade to dual camera home protection and keep an eye over large areas with the eufy Security S320 floodlight security camera. View vivid images with the dual camera system: a telephoto lens camera that takes detailed shots from up to 50 ft. (15 m) away and a second integrated wide-angle lens camera that captures large areas in 3K resolution. The dual cameras work together to achieve up to 8X digital zoom. Know who is around your home and reduce false notifications with on-device AI. It detects when a person is present then utilizes 360° pan and tilt coverage to track and alert you. See detailed images in the dark with full color night vision. Communicate with guests or a delivery person using the integrated 2-way audio. Ward off unwanted visitors in the late evenings or when you're away with the motion-activated 2,000 Lumens floodlight and smart alarm. It handles rain or extreme heat with an IP65 weatherproof rating. Color: White.

Transform your outdoor space with the perfect blend of security, functionality, and style. Order your Cast Aluminum Black Mailbox today and enjoy the peace of mind and elegance it brings to your home. Whether you're looking to enhance your own property or searching for the perfect gift, this mailbox is the ultimate choice for discerning homeowners.

Mail Boss heavy-duty multi-unit cluster mailbox kits are perfect for homeowner associations, multi-family residential units, cul-de-sacs, rural areas and close-knit neighborhoods with limited roadside mail delivery. The 2-Tone Mail Manager locking security mailbox bundle by Mail Boss is USPS Approved for residential use and protects against mail theft and vandalism. The innovative design accepts mail bundles and small packages, yet deters fishing. Made of heavy-gauge galvanized steel, patented anti-pry latch locking mechanism to impede leveraged entry and high-security 12-disc wafer locks with 3 laser cut keys per unit. Never worry about your mail being stolen again with Mail Boss. Color: Black & Granite.

Transform your outdoor space with the perfect blend of security, functionality, and style. Order your Cast Aluminum Mailbox today and enjoy the peace of mind and elegance it brings to your home. Whether you're looking to enhance your own property or searching for the perfect gift, this mailbox is the ultimate choice for discerning homeowners. Color: White.

Mail Boss heavy-duty multi-unit cluster mailbox kits are perfect for homeowner associations, multi-family residential units, cul-de-sacs, rural areas and close-knit neighborhoods with limited roadside mail delivery. The 2-Tone Mail Manager locking security mailbox bundle by Mail Boss is USPS Approved for residential use and protects against mail theft and vandalism. The innovative design accepts mail bundles and small packages, yet deters fishing. Made of heavy-gauge galvanized steel, patented anti-pry latch locking mechanism to impede leveraged entry and high-security 12-disc wafer locks with 3 laser cut keys per unit. Never worry about your mail being stolen again with Mail Boss. Color: Granite & Black.

Elevate your security with the REOLINK 4k 8mp outdoor PTZ auto-tracking PoE camera. Experience crystal-clear 4k ultra-HD resolution for unparalleled image quality. Benefit from a wide field of view with 355° pan, 90° tilt and 3x optical zoom capabilities. The camera intelligently tracks moving objects, ensuring accurate monitoring. Detect people, vehicles and pets with precision using advanced algorithms. Enjoy color night vision with powerful spotlights, capturing detailed images even in low-light conditions. Receive instant motion alerts and engage in 2-way audio communication. Seamlessly connect with REOLINK IoT devices for enhanced functionality. The camera supports up to 256GB SD card storage. Installation is a breeze with power over ethernet (PoE) technology, requiring just 1 cable. Integrate effortlessly with REOLINK NVRs for a comprehensive security system. Choose from flexible storage options, including micro-SD cards, REOLINK NVRs or FTP servers. Capture dynamic processes with the time-lapse feature. Manage your cameras remotely through the user-friendly REOLINK app and client. Compatible with google home, allowing convenient access via voice commands. Designed for outdoor performance, the camera withstands various weather conditions. Enhance your security infrastructure with the REOLINK 4k 8mp outdoor PTZ auto-tracking PoE camera and enjoy peace of mind throughout the year. Color: White.

With the E892DD-E 8MP 4K Ultra HD Smart Deterrence IP Dome Security Camera, elevate your property's surveillance to a new level of precision and interactivity. This high-quality, advanced camera is engineered to integrate seamlessly into your IP security system, providing state-of-the-art features that set it apart from conventional security cameras.Boasting an 8MP image sensor, the E892DD-E delivers 4K Ultra HD resolution, offering four times the resolution of standard HD 1080p. This results in exceptionally sharp video quality with realistic color representation, ensuring that every detail is captured with clarity. The innovative Smart Motion Detection Plus technology enhances your security by providing the option of Face Detection or Person and Vehicle Detection, minimizing false alerts and focusing on the most relevant activities on your property.Face Detection technology is particularly effective for monitoring entry points, as it triggers notifications only when a human face is recognized, reducing unnecessary alerts from passersby. For a comprehensive review, the camera captures and stores facial images for quick reference and allows you to filter events specifically for faces using the Smart Search function.The Person and Vehicle Detection feature further refines the camera's responsiveness, sending push notifications directly to your smartphone only when a person or vehicle is detected. This durable camera is designed to withstand outdoor conditions, with an IP67 rating that ensures it can endure extreme temperatures ranging from -22°F to 140°F, making it a reliable choice for all-year-round security.The E892DD-E camera is equipped with a motion-activated LED warning light that can be customized to activate upon detecting a person or vehicle. Additionally, a remote-triggered siren, controllable via the Lorex Home app, serves as an active deterrent against potential intruders.Audio capabilities include listen-in audio and two-way talk, facilitated by a built-in speaker and microphone. This feature allows for clear communication through the camera and adds an extra layer of detail to your security monitoring.Lorex's Safeguard technology allows you to specify areas of particular importance, with the ability to set up to three "Missing" areas and one "Left Behind" area, ensuring you're alerted to any significant changes within these zones.Experience full-color video at night with the revolutionary Color Night Vision (CNV) technology, which, with the aid of external lighting, provides greater detail and contrast. In darker conditions, the camera's long-range IR night vision activates, capturing crisp black and white footage up to 150ft away in ambient lighting and 98ft in complete darkness.Installation is simplified with Power over Ethernet (PoE), requiring only a single Cat5e ethernet cable for video transmission, power, and a stable network connection. The camera supports H.265/HEVC encoding, which compresses file sizes up to 50% more than...

Mail Boss heavy-duty multi-unit cluster mailbox kits are perfect for homeowner associations, multi-family residential units, cul-de-sacs, rural areas and close-knit neighborhoods with limited roadside mail delivery. The 2-Tone Mail Manager locking security mailbox bundle by Mail Boss is USPS Approved for residential use and protects against mail theft and vandalism. The innovative design accepts mail bundles and small packages, yet deters fishing. Made of heavy-gauge galvanized steel, patented anti-pry latch locking mechanism to impede leveraged entry and high-security 12-disc wafer locks with 3 laser cut keys per unit. Never worry about your mail being stolen again with Mail Boss. Color: Granite & Black.

How can you enhance your home security with cutting-edge technology? Look no further than the 2 Pack W462AQC-E 4MP 2K Pan & Tilt Indoor Wi-Fi Security Camera. This advanced security solution offers sophisticated monitoring with its high-resolution 4MP 2K video capability, ensuring that every detail is captured with crystal-clear precision. The innovative pan and tilt functionality provides a comprehensive view of your indoor space, allowing the camera to swivel and adjust seamlessly for maximum coverage.Experience the convenience of smart home integration with this high-tech camera system, which is compatible with the Lorex Home Center. This allows for a unified security network that can include a variety of devices such as outdoor Wi-Fi cameras, video doorbells, floodlight cameras, and alarm sensors. The Lorex Fusion Collection further expands your system's capabilities by combining Network Video Recorders (NVRs) and wireless devices, all managed through the intuitive Lorex Home App.The camera's sophisticated person detection feature minimizes false alerts by accurately identifying human movement within its field of view. This smart technology ensures that you receive relevant notifications when it matters most. Additionally, the two-way communication feature enables you to engage in real-time conversations with anyone in the camera's vicinity, directly through the Lorex Home app.Privacy is paramount, and with the Privacy Mode, you can easily disable the camera as needed, ensuring your personal moments remain just that - personal. The built-in local storage supports up to 16GB, providing a secure way to retain footage without the need for monthly fees.Stay connected on-the-go with the Lorex Home App, which grants you remote access to live video streams, system customization, and playback of recorded events. The camera's smart home compatibility extends to voice control with Amazon Alexa and Google Assistant, making it effortless to activate camera features. You can even cast your security footage to a larger screen using Chromecast or Firestick.With night vision capabilities extending up to 32ft (10m), this innovative security camera ensures that your indoor environment is monitored around the clock. The digital zoom function within the Lorex Home app enhances clarity, allowing you to focus on the details that matter.Elevate your home security with the 2 Pack W462AQC-E 4MP 2K Pan & Tilt Indoor Wi-Fi Security Camera, where sophisticated design meets smart functionality for the ultimate peace of mind.

LEVEL SENSE is the only system on the market that is fully powered and automatically recharged with it's own internal back-up battery. Warehouses your data on our servers- see the cycling of your pump online- has local and remote alarms via siren, text, and E-mail - Android and Apple iOS apps LEVEL SENSE will send an alert you before your sump overflows via E-mail and/or Text Message- show the depth of water in your sump online (no lifting the lid on the sump anymore)- monitor the humidity and alert if water comes through the foundation. Humidity of 60% or more is required for mold to grow- Detect and send an alert temperatures above or below those you specify guarding against frozen pipes- Detect leaks using the included leak sensor that can be used for a second line of defense for the Sump Pump, a water heater or another purpose- Alert if AC power is lost to the unit (i.e. if power is out to your pump)- Alert (after a duration you specify) if internet connection is lost- Interface to a home alarm (or other device). The low-profile float switch mounting bracket ensures that there will be no additional wires in the sump to inhibit proper pump operation. See up to 7-days of depth history for water in the sump. Input the E-mail addresses and text number for notifications LEVEL SENSE has a build in rechargeable battery and integrated battery charger for 4-hours. Never change a battery again.