{"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\/pt\/blog\/zashhita-ot-ddos-atak\/zashhita-pochtovogo-smtp-servera","title":{"rendered":"Prote\u00e7\u00e3o do servidor de SMTP de e-mail","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Todo usu\u00e1rio ativo da Internet j\u00e1 se deparou com o problema do spam na caixa de entrada. Para grandes empresas, esse problema \u00e9 ainda mais relevante. Devido \u00e0 avalanche de spam que chega \u00e0s suas caixas de entrada oficiais, muitas vezes \u00e9 poss\u00edvel perder uma proposta comercial vantajosa, uma resposta de um potencial parceiro ou um curr\u00edculo de um candidato promissor.<\/p>\n<p>Segundo estimativas conservadoras, a propor\u00e7\u00e3o de spam no tr\u00e1fego global de e-mails ultrapassa a metade. Os funcion\u00e1rios, ao receberem v\u00e1rias mensagens de neg\u00f3cios por dia, apagam centenas de e-mails de spam diariamente. No m\u00eas, dedicar algumas horas para combater o spam \u00e9 comum. E uma configura\u00e7\u00e3o inadequada da prote\u00e7\u00e3o contra spam pode resultar na inclus\u00e3o na pasta \u00ab<strong>Spam<\/strong>\u00bb de e-mails leg\u00edtimos.<\/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>A prote\u00e7\u00e3o do servidor de e-mail \u00e9 necess\u00e1ria contra esses tipos de ataques, as ferramentas de prote\u00e7\u00e3o incluem <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1373\">servidores<\/a>:<\/p>\n<ul style=\"list-style-image: url(https:\/\/prohoster.info\/wp-content\/uploads\/check\/check_server.png);\">\n<li><strong>ataque DDoS.<\/strong> Um grande volume de tr\u00e1fego ou e-mails \u00e9 enviado ao servidor de e-mail, resultando em sua incapacidade de funcionar corretamente. Um servidor sobrecarregado pode ser invadido ou essa ataque pode ser usado como uma manobra de distra\u00e7\u00e3o.<\/li>\n<li><strong>Spam.<\/strong> Spam s\u00e3o mensagens indesejadas. Ele pode ser de dois tipos: comercial e n\u00e3o comercial. O primeiro tipo de spam pode at\u00e9 ser \u00fatil para uma empresa, pois pode trazer ofertas interessantes. O segundo tipo de spam inclui propagandas de sites de namoro, sites pornogr\u00e1ficos, cartas nigerianas, falsa caridade, spam pol\u00edtico, cartas da felicidade e spam viral. A filtragem de spam pode ser autom\u00e1tica ou n\u00e3o autom\u00e1tica. Na filtragem autom\u00e1tica, s\u00e3o utilizados filtros de spam no <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/dts-dronten\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2510\">servidor<\/a>, ou a an\u00e1lise do corpo da mensagem. Na filtragem n\u00e3o autom\u00e1tica, o usu\u00e1rio define manualmente palavras-chave para filtrar o spam. Esses m\u00e9todos permitem filtrar 97% do spam, deixando apenas os m\u00e9todos mais novos e criativos de contornar as bloqueios.<\/li>\n<li><strong>Phishing.<\/strong> Infec\u00e7\u00e3o do computador por um trojan. Esse trojan coleta logins, senhas, n\u00fameros de cart\u00f5es banc\u00e1rios dos usu\u00e1rios e os transmite para terceiros. Normalmente, essa \u00e9 uma mensagem com um programa anexado ou um link para um site malicioso. Infelizmente, 90% das empresas n\u00e3o d\u00e3o a devida aten\u00e7\u00e3o a essa amea\u00e7a e n\u00e3o atualizam o software.<\/li>\n<\/ul>\n<p>Em <strong>a prote\u00e7\u00e3o do servidor SMTP de e-mail<\/strong> inclui listas negras e cinzentas, an\u00e1lise de anexos, cabe\u00e7alhos, prote\u00e7\u00e3o contra coleta de endere\u00e7os. Al\u00e9m disso, utiliza-se um algoritmo de verifica\u00e7\u00e3o de massifica\u00e7\u00e3o, que se aperfei\u00e7oa a cada ano, em vez de m\u00e9todos de spam. Um bom sistema de prote\u00e7\u00e3o de servidor de e-mail \u00e9 capaz de processar centenas de mensagens por segundo sem um aumento significativo na carga da rede.<\/p>\n<p>Em 90% dos casos, \u00e9 atrav\u00e9s do e-mail que v\u00edrus, keyloggers e trojans entram na rede de computadores. <strong>A empresa de hospedagem ProHoster<\/strong> oferece proteger suas caixas de correio corporativas de uma enxurrada de spam e v\u00edrus. Vamos verificar todos os e-mails recebidos com um filtro inteligente para reduzir o tr\u00e1fego.<\/p>\n<p>Todos os detalhes podem ser obtidos com nosso suporte t\u00e9cnico. <a rel=\"nofollow\" href=\"\/pt\/zhashchita-ot-ddos\/\">Entre em contato conosco j\u00e1 hoje<\/a> \u2013 garanta prote\u00e7\u00e3o confi\u00e1vel para suas caixas de correio.<\/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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