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	<title>SPAM &#8211; Miroslav Šraga</title>
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	<description>Sdílím své zkušenosti s Microsoft 365 a Azure</description>
	<lastBuildDate>Wed, 07 Feb 2024 11:11:31 +0000</lastBuildDate>
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		<title>Vytvoření DMARC záznamu pro fallback doménu onmicrosoft.com</title>
		<link>https://www.sraga.cz/vytvoreni-dmarc-zaznamu-domenu-onmicrosoft-com/</link>
					<comments>https://www.sraga.cz/vytvoreni-dmarc-zaznamu-domenu-onmicrosoft-com/#respond</comments>
		
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		<pubDate>Wed, 07 Feb 2024 10:55:09 +0000</pubDate>
				<category><![CDATA[Bezpečnost]]></category>
		<category><![CDATA[DMARC]]></category>
		<category><![CDATA[DNS]]></category>
		<category><![CDATA[Exchange]]></category>
		<category><![CDATA[SPAM]]></category>
		<guid isPermaLink="false">https://www.sraga.cz/?p=151</guid>

					<description><![CDATA[DMARC je protokol pro ověřování e-mailů. Je navržen tak, aby umožnil majitelům e-mailových domén chránit svou doménu před neoprávněným použitím, což se běžně nazývá e-mailový spoofing. DMARC funguje společně se Sender Policy Framework (SPF) a DomainKeys Identified Mail (DKIM) pro ověření odesílatelů pošty. Věděli jste že DMARC záznam můžete nastavit také pro výchozí doménu onmicrosoft.com, ... <a title="Vytvoření DMARC záznamu pro fallback doménu onmicrosoft.com" class="read-more" href="https://www.sraga.cz/vytvoreni-dmarc-zaznamu-domenu-onmicrosoft-com/" aria-label="Číst více o Vytvoření DMARC záznamu pro fallback doménu onmicrosoft.com">Číst dál</a>]]></description>
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									<p>DMARC je protokol pro ověřování e-mailů. Je navržen tak, aby umožnil <strong>majitelům e-mailových domén chránit svou doménu před neoprávněným použitím</strong>, což se běžně nazývá e-mailový spoofing. DMARC funguje společně se Sender Policy Framework (SPF) a DomainKeys Identified Mail (DKIM) pro ověření odesílatelů pošty.</p>								</div>
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						<span class="elementor-alert-title">Věděli jste</span>
			
						<span class="elementor-alert-description">že DMARC záznam můžete nastavit také pro výchozí doménu onmicrosoft.com, takzvanou fallback doménu nebo také Microsoft Online Email Routing Address?</span>
			
			
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									<ol><li>Otevřete si <a href="https://admin.microsoft.com" target="_blank" rel="noopener">Microsoft 365 Admin Centrum</a></li><li>Rozbalte <strong>Settings</strong> (Nastavení)</li><li>Klikněte na <strong>Domains</strong> (Domény)</li><li>Klikněte na vaši <strong>.onmicrosoft.com doménu</strong></li></ol>								</div>
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																<a href="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1.png" data-elementor-open-lightbox="yes" data-elementor-lightbox-title="DMARC-onmicrosoft_1" data-e-action-hash="#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU2LCJ1cmwiOiJodHRwczpcL1wvd3d3LnNyYWdhLmN6XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI0XC8wMlwvRE1BUkMtb25taWNyb3NvZnRfMS5wbmcifQ%3D%3D">
							<img fetchpriority="high" decoding="async" width="768" height="677" src="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1-768x677.png" class="attachment-medium_large size-medium_large wp-image-156" alt="DMARC záznam pro doménu onmicrosoft.com" srcset="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1-768x677.png 768w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1-300x265.png 300w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1-1024x903.png 1024w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_1.png 1169w" sizes="(max-width: 768px) 100vw, 768px" />								</a>
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									<p>5. Klikněte na záložku <strong>DNS Recods</strong> (DNS záznamy)<br />6. Klikněte na <strong>+Add record</strong> (Přidat záznamú</p>								</div>
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																<a href="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2.png" data-elementor-open-lightbox="yes" data-elementor-lightbox-title="DMARC-onmicrosoft_2" data-e-action-hash="#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTU1LCJ1cmwiOiJodHRwczpcL1wvd3d3LnNyYWdhLmN6XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI0XC8wMlwvRE1BUkMtb25taWNyb3NvZnRfMi5wbmcifQ%3D%3D">
							<img decoding="async" width="768" height="677" src="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2-768x677.png" class="attachment-medium_large size-medium_large wp-image-155" alt="DMARC záznam pro doménu onmicrosoft.com" srcset="https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2-768x677.png 768w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2-300x265.png 300w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2-1024x903.png 1024w, https://www.sraga.cz/wp-content/uploads/2024/02/DMARC-onmicrosoft_2.png 1169w" sizes="(max-width: 768px) 100vw, 768px" />								</a>
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									<p>7. Vyberte typ záznamu TXT<br />8. Název záznamu _dmarc<br />9. Hodnota záznamu dle potřeby (none, quarantine, reject)</p><p>Více informací o<a href="https://www.cloudpartner.cz/dmarc-jak-zlepsit-dorucitelnost-vasich-e-mailu/" target="_blank" rel="noopener"> nastavení DMARC záznamu</a> můžete najít třeba <a href="https://www.cloudpartner.cz/dmarc-jak-zlepsit-dorucitelnost-vasich-e-mailu/" target="_blank" rel="noopener">zde</a>.</p><p>10. Nastavení uložte pomocí tlačítka <strong>Save</strong> (Uložit)</p>								</div>
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					<xmp>v=DMARC1; p=quarantine; pct=100

v=DMARC1; p=reject; pct=100</xmp>
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									<p>11. DMARC záznam je vytvořen. Zkontrolovat si jej můžete například pomocí nástroje <a href="https://www.mxtoolbox.com" target="_blank" rel="noopener">mxtoolbox.com</a></p>								</div>
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