page_title: Paul Vixie
hierarchical_section_title: Paul Vixie
caption_attribution_description: English: Paul Vixie gives the keynote presentation at AVAR 2019 in Osaka, Japan
context_page_description: Paul Vixie is an American computer scientist whose technical contributions include Domain Name System protocol design and procedure, mechanisms to achieve operational robustness of DNS implementations, and significant contributions to open source software principles and methodology. He also created and launched the first successful commercial anti-spam service. He authored the standard UNIX system programs SENDS, proxynet, rtty and Vixie cron. At one point he ran his own consulting business, Vixie Enterprises.
context_section_description: Paul Vixie is an American computer scientist whose technical contributions include Domain Name System (DNS) protocol design and procedure, mechanisms to achieve operational robustness of DNS implementations, and significant contributions to open source software principles and methodology.  He also created and launched the first successful commercial anti-spam service. He authored the standard UNIX system programs SENDS, proxynet, rtty and Vixie cron. At one point he ran his own consulting business, Vixie Enterprises.
caption: Paul Vixie giving the keynote presentation at AVAR 2019[1]
exif: {"Image Make": "SONY", "Image Model": "ILCE-7RM2", "Image Orientation": "Horizontal (normal)", "Image XResolution": "240", "Image YResolution": "240", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Lightroom 3.1 (Macintosh)", "Image DateTime": "2020:01:03 10:40:39", "Image ExifOffset": "206", "EXIF ExposureTime": "1/160", "EXIF FNumber": "9/2", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "2500", "EXIF SensitivityType": "Recommended Exposure Index", "EXIF RecommendedExposureIndex": "2500", "EXIF ExifVersion": "0231", "EXIF DateTimeOriginal": "2019:11:06 17:20:31", "EXIF DateTimeDigitized": "2019:11:06 17:20:31", "EXIF ShutterSpeedValue": "24609/3361", "EXIF ApertureValue": "51501/11867", "EXIF BrightnessValue": "3067/1280", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "555/128", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "160", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "4630", "EXIF ExifImageLength": "4167", "EXIF FocalPlaneXResolution": "950186/439", "EXIF FocalPlaneYResolution": "950186/439", "EXIF FocalPlaneResolutionUnit": "3", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "160", "EXIF SceneCaptureType": "Standard", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF LensSpecification": "[75, 300, 9/2, 28/5]", "EXIF LensModel": "75-300mm F4.5-5.6"}