{"id":41975,"date":"2017-09-13T00:00:00","date_gmt":"2017-09-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/zashhita-pochtovogo-smtp-servera"},"modified":"2020-02-18T13:44:45","modified_gmt":"2020-02-18T10:44:45","slug":"zashhita-pochtovogo-smtp-servera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/zashhita-ot-ddos-atak\/zashhita-pochtovogo-smtp-servera","title":{"rendered":"Beveiliging van de SMTP-e-mailserver","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Elke actieve internetgebruiker heeft te maken gehad met het probleem van spam in hun mailbox. Voor grote bedrijven is dit probleem nog urgenter. Door de enorme hoeveelheid spam die op hun offici\u00eble e-mailadressen binnenkomt, missen ze vaak aantrekkelijke commerci\u00eble aanbiedingen, antwoorden van potenti\u00eble partners of cv's van veelbelovende kandidaten.<\/p>\n<p>Volgens de meest conservatieve schattingen overschrijdt het aandeel spam in het wereldwijde e-mailverkeer de helft. Medewerkers ontvangen dagelijks meerdere zakelijke e-mails en verwijderen dagelijks honderden spamberichten uit hun mailbox. Maandelijks gaat er een paar uur van de werktijd op aan de bestrijding van spam. En een verkeerde configuratie van de spambeveiliging kan ertoe leiden dat goede berichten in de map \u201e<strong>Spam<\/strong>\u201c terechtkomen.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/prohoster.info\/wp-content\/uploads\/2017\/09\/zashchita-pochtovogo-smtp-servera.png\" alt=\"\" width=\"596\" height=\"562\" class=\"aligncenter size-full wp-image-5180\" \/><\/p>\n<p>Beveiliging van de e-mailserver is nodig tegen deze soorten aanvallen, de beschermingsmiddelen <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/\"   title=\"servers\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1373\">servers<\/a>:<\/p>\n<ul style=\"list-style-image: url(https:\/\/prohoster.info\/wp-content\/uploads\/check\/check_server.png);\">\n<li><strong>DDoS-aanval.<\/strong> Er wordt een grote stroom verkeer of berichten naar de e-mailserver gestuurd, waardoor deze niet meer kan functioneren. Een overbelaste server kan worden gehackt of deze aanval kan worden gebruikt als een afleidingsmanoeuvre.<\/li>\n<li><strong>Spam.<\/strong> Spam zijn ongewenste e-mailberichten. Er zijn twee soorten: commerci\u00eble en niet-commerci\u00eble. De eerste soort spam kan zelfs nuttig zijn voor een bedrijf, omdat het interessante aanbiedingen kan opleveren. De tweede soort spam omvat advertenties van datingwebsites, pornografische sites, Nigeriaanse brieven, pseudo-liefdadigheid, politieke spam, geluksbrieven en virale spam. Spamfiltering kan automatisch of niet-automatisch zijn. Bij automatische filtering worden spamfilters gebruikt op <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-dronten\/\"   title=\"de server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2510\">de server<\/a>, of de inhoud van de e-mail wordt geanalyseerd. Bij niet-automatische filtering stelt de gebruiker zelf stopwoorden in waarmee spam wordt gefilterd. Dergelijke methoden maken het mogelijk om 97% van de spam te filteren, terwijl alleen de nieuwste en ingenieuze manieren om blokkades te omzeilen overblijven.<\/li>\n<li><strong>Phishing.<\/strong> Infectie van de computer met een trojan. Deze trojan verzamelt gebruikersnamen, wachtwoorden, bankkaartnummers en geeft deze door aan derden. Dit is meestal een e-mail met een bijgevoegd programma of een link naar een schadelijke website. Helaas besteedt 90% van de bedrijven geen voldoende aandacht aan deze bedreiging en updaten ze de software niet.<\/li>\n<\/ul>\n<p>In <strong>beveiliging van de SMTP-e-mailserver<\/strong> het omvat zwarte en grijze lijsten, analyse van bijlagen, koppen, bescherming tegen adresverzameling. Bovendien wordt er een algoritme voor massacontrole gebruikt, dat van jaar tot jaar verbetert, in plaats van spamtechnieken. Een goed beveiligingssysteem voor mailservers kan honderden e-mails per seconde verwerken zonder merkbare belasting voor het netwerk.<\/p>\n<p>In 90% van de gevallen komen virussen, keyloggers en trojans via e-mail het computersysteem binnen. <strong>Hostingbedrijf ProHoster<\/strong> biedt bescherming voor uw zakelijke e-mailboxes tegen een overvloed aan spam en virussen. We controleren alle binnenkomende e-mails met behulp van een intelligente filter om het verkeer te verminderen.<\/p>\n<p>U kunt alle details aanvragen bij onze technische ondersteuning. <a rel=\"nofollow\" href=\"\/nl\/zhashchita-ot-ddos\/\">Neem vandaag nog contact met ons op<\/a> \u2013 zorg voor betrouwbare bescherming van uw e-mailboxen.<\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u0430\u0436\u0434\u044b\u0439 \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0418\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430 \u0441\u0442\u0430\u043b\u043a\u0438\u0432\u0430\u043b\u0441\u044f \u0441 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043e\u0439 \u0441\u043f\u0430\u043c\u0430 \u0432 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u043c \u044f\u0449\u0438\u043a\u0435. \u0414\u043b\u044f \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439 \u044d\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0435\u0449\u0451 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u0435\u0435. \u0418\u0437-\u0437\u0430 \u043c\u043e\u0440\u044f \u0441\u043f\u0430\u043c\u0430, \u043f\u0440\u0438\u0445\u043e\u0434\u044f\u0449\u0435\u0433\u043e \u043d\u0430 \u0438\u0445 \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0435 \u044f\u0449\u0438\u043a\u0438, \u0447\u0430\u0441\u0442\u043e \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u0432\u044b\u0433\u043e\u0434\u043d\u043e\u0435 \u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u043e\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435, \u043e\u0442\u0432\u0435\u0442 \u043e\u0442 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u0430\u0440\u0442\u043d\u0451\u0440\u0430 \u0438\u043b\u0438 \u0440\u0435\u0437\u044e\u043c\u0435 \u043e\u0442 \u043f\u0435\u0440\u0441\u043f\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0441\u043e\u0438\u0441\u043a\u0430\u0442\u0435\u043b\u044f. \u041f\u043e \u0441\u0430\u043c\u044b\u043c \u0441\u043a\u0440\u043e\u043c\u043d\u044b\u043c \u043e\u0446\u0435\u043d\u043a\u0430\u043c, \u0434\u043e\u043b\u044f \u0441\u043f\u0430\u043c\u0430 \u0432 \u043c\u0438\u0440\u043e\u0432\u043e\u043c \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u043c \u0442\u0440\u0430\u0444\u0438\u043a\u0435 \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u0443. \u0421\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u0438, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":41976,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[698],"tags":[],"class_list":["post-41975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zashhita-ot-ddos-atak"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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