{"id":939,"date":"2022-11-06T21:33:17","date_gmt":"2022-11-06T21:33:17","guid":{"rendered":"https:\/\/blog.pgregg.com\/blog\/?p=939"},"modified":"2022-11-06T21:34:57","modified_gmt":"2022-11-06T21:34:57","slug":"hosted-email-provider-compatibility-with-3rd-party-email-security-providers","status":"publish","type":"post","link":"https:\/\/blog.pgregg.com\/blog\/2022\/11\/hosted-email-provider-compatibility-with-3rd-party-email-security-providers\/","title":{"rendered":"Hosted Email Provider compatibility with 3rd party Email Security Providers"},"content":{"rendered":"\n<p>I currently host my own Email server at home and have done for over 20 years.   I&#8217;m thinking about replacing the home based server with a hosted solution out there &#8211; but I don&#8217;t want to lose some of the functionality I have today.<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium is-style-default\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"262\" data-attachment-id=\"941\" data-permalink=\"https:\/\/blog.pgregg.com\/blog\/2022\/11\/hosted-email-provider-compatibility-with-3rd-party-email-security-providers\/image-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?fit=600%2C393&amp;ssl=1\" data-orig-size=\"600,393\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?fit=400%2C262&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?fit=525%2C344&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?resize=400%2C262&#038;ssl=1\" alt=\"\" class=\"wp-image-941\" srcset=\"https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?resize=400%2C262&amp;ssl=1 400w, https:\/\/i0.wp.com\/blog.pgregg.com\/blog\/wp-content\/uploads\/2022\/11\/image.png?w=600&amp;ssl=1 600w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Generally, the requirements are pretty standard &#8211; so a short list:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Send SMTP Outbound through port 25 or 587<\/li>\n\n\n\n<li>SMTP Auth<\/li>\n\n\n\n<li>TLS support<\/li>\n\n\n\n<li>IMAPS mailbox<\/li>\n\n\n\n<li>Up to 6 users<\/li>\n\n\n\n<li>Ability to integrate with 3rd party Email Security Provider<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>So, it turns out that locating all this information is really hard.  I&#8217;m going to publish with lots of gaps or unknown answers. I&#8217;m happy to take contributions if you know about providers and their capabilities.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><\/td><td>Outbound<\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td>Inbound<\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>Service<\/td><td>Info<\/td><td>SMTP Send<\/td><td>SMTP Auth<\/td><td>STARTTLS<\/td><td>Outbound IP<\/td><td>DKIM Signing<\/td><td>3rd Party Outbound Relay<\/td><td>SPF Validation<\/td><td>DKIM Validation<\/td><td>DMARC Policy Enforcement<\/td><td>3rd Party In Relay*<\/td><td>IMAPS \/ POP3 mailbox<\/td><td>Mail Storage<\/td><td>Aliases<\/td><\/tr><tr><td>Hetzner Webmail<\/td><td><a href=\"https:\/\/docs.hetzner.com\/konsoleh\/account-management\/email\/webmail-faq\/\">https:\/\/docs.hetzner.com\/konsoleh\/account-management\/email\/webmail-faq\/<\/a><br><\/td><td>?<\/td><td>?<\/td><td>?<\/td><td>?<\/td><td>\u2705<\/td><td>\u274c<\/td><td>?<\/td><td>?<\/td><td>?<\/td><td><\/td><td>POP3<\/td><td><\/td><td>Unlimited<\/td><\/tr><tr><td>Fastmail<\/td><td><a href=\"https:\/\/www.fastmail.com\/\">https:\/\/www.fastmail.com\/<\/a><\/td><td>\u2705<br>Port 465 TLS\/SSL<\/td><td>?<\/td><td>?<\/td><td>?<\/td><td>?<\/td><td>\u274c<\/td><td>?<\/td><td>?<\/td><td>?<\/td><td>\u274c<\/td><td>\u2705<br>IMAPS<br>imap.fastmail.com<\/td><td><\/td><td><\/td><\/tr><tr><td>Zoho Mail<\/td><td><a href=\"https:\/\/www.zoho.com\/mail\/\">https:\/\/www.zoho.com\/mail\/<\/a><br><a href=\"https:\/\/www.zoho.com\/mail\/zohomail-pricing.html\">https:\/\/www.zoho.com\/mail\/zohomail-pricing.html<\/a> (free up to 5 users)<\/td><td>\u2705<\/td><td><\/td><td><\/td><td><\/td><td><\/td><td>\u2705<\/td><td><\/td><td><\/td><td><\/td><td>\u2705<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>* 3rd Party In Relay &#8211; In order to support this &#8211; the service must trust a &#8216;Man in the middle&#8217; Security service to do SPF\/DKIM\/DMARC policy enforcement, and crucially not perform SPF\/DKIM\/DMARC checking on incoming email.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I currently host my own Email server at home and have done for over 20 years. I&#8217;m thinking about replacing the home based server with a hosted solution out there &#8211; but I don&#8217;t want to lose some of the functionality I have today. Generally, the requirements are pretty standard &#8211; so a short list: &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/blog.pgregg.com\/blog\/2022\/11\/hosted-email-provider-compatibility-with-3rd-party-email-security-providers\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Hosted Email Provider compatibility with 3rd party Email Security Providers&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-939","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pbQOUu-f9","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/posts\/939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/comments?post=939"}],"version-history":[{"count":5,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/posts\/939\/revisions"}],"predecessor-version":[{"id":949,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/posts\/939\/revisions\/949"}],"wp:attachment":[{"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/media?parent=939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/categories?post=939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.pgregg.com\/blog\/wp-json\/wp\/v2\/tags?post=939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}