{"id":53013,"date":"2019-11-21T00:00:00","date_gmt":"2019-11-20T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/zimbra-i-zashhita-ot-spama"},"modified":"2020-02-18T14:00:51","modified_gmt":"2020-02-18T11:00:51","slug":"zimbra-i-zashhita-ot-spama","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/zimbra-i-zashhita-ot-spama","title":{"rendered":"Zimbra ja r\u00e4mpsposti kaitse","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00dcheks peamiseks \u00fclesandeks, millega peab silmitsi seisma oma postiserveri administraator ettev\u00f5ttes, on r\u00e4mpsposti sisaldavate kirjade filtreerimine. R\u00e4mpsposti kahju on ilmselge ja arusaadav: peale ohu ettev\u00f5tte teabe turvalisusele v\u00f5tab see ruumi serveri k\u00f5vakettalt ning v\u00e4hendab t\u00f6\u00f6tajate t\u00f5husust, sattudes \u201eSissetulevatesse kirjadessse\u201c. Soovimatute t\u00f6\u00f6de eristamine ametlikest kirjadest ei ole nii lihtne, kui esmapilgul n\u00e4ida v\u00f5ib. Asi on selles, et lahendust, mis garanteeriks 100% tulemuse soovimatute kirjade filtreerimisel, lihtsalt ei eksisteeri, ja halbalt seadistatud soovimatu r\u00e4mpsposti tuvastamise algoritm v\u00f5ib ettev\u00f5ttele tekitada palju rohkem kahju kui r\u00e4mpspost ise.<\/p>\n

\"Zimbra
\n<\/a><\/noindex>
\nZimbra Cooperation Suite'is on sp\u00e4mivastane kaitse ellu viidud tasuta ja avatud l\u00e4htekoodiga tarkvara Amavis abil, mis rakendab SPF-i, DKIM-i ning toetab mustade, valgete ja hallide loendeid. Lisaks Amavis'ile kasutatakse Zimbra's viiruset\u00f5rjet ClamAV ja sp\u00e4mmi filtreid SpamAssassin. T\u00e4naseks on SpamAssassin optimaalne lahendus sp\u00e4mmi filtreerimiseks. Selle t\u00f6\u00f6p\u00f5him\u00f5te seisneb selles, et iga sisenev kiri kontrollitakse mustrite j\u00e4rgi, mis on iseloomulikud soovimatutele postitustele. P\u00e4rast iga sobiva kontrolli teostamist annab SpamAssassin igale kirjale kindla arvu punkte. Mida rohkem punkte koguneb kontrollimise l\u00f5pus, seda suurem on t\u00f5en\u00e4osus, et anal\u00fc\u00fcsitav kiri on sp\u00e4m.<\/p>\n

Selline sissetulevate kirjade hindamise s\u00fcsteem v\u00f5imaldab filtreid \u00fcsna paindlikult seadistada. Ehkki on v\u00f5imalik m\u00e4\u00e4rata punkte, mille juures kiri loetakse kahtlaseks ja saadetakse rikka 'Spam' kausta, v\u00f5ib m\u00e4\u00e4rata ka punkte, mille juures kiri j\u00e4\u00e4b j\u00e4\u00e4davalt kustutatud. Seades sp\u00e4mmi filtreid nii, saab lahendada kohe kaks k\u00fcsimust: esiteks, v\u00e4ltida v\u00e4\u00e4rtusliku kettaruumi t\u00e4itmist m\u00f5ttetute sp\u00e4mmi kirjadega, ja teiseks, maksimaalselt v\u00e4hendada l\u00e4bim\u00e4\u00e4ramiste arvu \u00e4ri kirjade osas, mis on sp\u00e4mmi filtri t\u00f5ttu kaduma l\u00e4inud.<\/p>\n

\"Zimbra
\n
\nPeamine probleem, millega Venemaa Zimbra kasutajad v\u00f5ivad silmitsi seista, on sisseehitatud r\u00e4mpsposti filtreerimise s\u00fcsteemi valmisolek venekeelse r\u00e4mpsposti filtreerimiseks. Selle p\u00f5hjuseks on sisseehitatud reeglite puudumine kirillitsas tekstile. L\u00e4\u00e4neesindajad lahendavad selle k\u00fcsimuse, kustutades tingimusteta k\u00f5ik venekeelsed e-kirjad. T\u00f5epoolest, kellelgi, kes on m\u00f5istuses ja selge meelel, ei tuleks ettepanekut pidada \u00e4ritehingut Euroopa ettev\u00f5tetega vene keeles. Kuid Venemaa kasutajad ei saa seda teha. Osaliselt v\u00f5ib seda probleemi lahendada vene Spammassassini reeglite lisamine<\/a><\/noindex>, kuid nende asjakohasust ja usaldusv\u00e4\u00e4rsust ei saa garanteerida.<\/p>\n

Zimbra Collaboration Suite'i avatud l\u00e4htekoodiga ja laialdase leviku t\u00f5ttu on v\u00f5imalik integreerida ka teisi, sealhulgas kommertslikke, lahendusi teabe turvamiseks. Kuid k\u00f5ige optimaalsem valik v\u00f5ib olla pilvep\u00f5hine kaitses\u00fcsteem k\u00fcberohtude eest. Pilvekaitse seadistamine toimub tavaliselt nii teenusepakkuja poolel kui ka kohalikul serveril. Seadistamise olemus seisneb selles, et kohaliku sisselogimise aadress asendatakse pilveserveri aadressiga, kus toimub e-kirjade filtreerimine, ja hiljem suunatakse k\u00f5ik kontrollitud kirjad ettev\u00f5tte aadressile. <\/p>\n

Selline s\u00fcsteem \u00fchendatakse lihtsa asendamisega IP-aadressid.<\/a> POP3-serveri jaoks sissetulevate e-kirjade MX-kirjetes serveris teie pilvelahenduse IP-aadressiga. Teisis\u00f5nu, kui varem n\u00e4gi kohaliku serveri MX-kirje v\u00e4lja umbes nii:<\/p>\n

domain.com. IN MX 0 pop
\ndomain.com. IN MX 10 pop
\npop IN A 192.168.1.100<\/p><\/blockquote>\n

\nSiis p\u00e4rast IP-aadressi asendamist teenusepakkuja pakutava pilvekaitse teenusega (\u00fctleme, et see on 26.35.232.80), muudab kirje j\u00e4rgmisteks:<\/p>\n

domain.com. IN MX 0 pop
\ndomain.com. IN MX 10 pop
\npop IN A 26.35.232.80<\/p><\/blockquote>\n

\nSamuti tuleb pilveplatvormi isikliku konto seadistamise k\u00e4igus m\u00e4rkida domeeni aadress, millelt tuleb filtreerimata e-post, ja domeeni aadress, kuhu tuleb suunata filtreeritud kirjad. P\u00e4rast neid toiminguid toimub teie postkasti filtreerimine kolmanda osapoole serverites, mis vastutab ettev\u00f5tte siseneva posti turvalisuse eest.<\/p>\n

Seega sobib Zimbra Collaboration Suite h\u00e4sti nii v\u00e4ikestele ettev\u00f5tetele, kes vajavad v\u00f5imalikult odavat, kuid siiski turvalist lahendust e-posti jaoks, kui ka suurtele ettev\u00f5tetele, kes t\u00f6\u00f6tavad pidevalt, et v\u00e4hendada k\u00fcberohtudega seotud riske.<\/p>\n

K\u00fcsimuste korral, mis on seotud Zextras Suite'iga, v\u00f5ite v\u00f5tta \u00fchendust ettev\u00f5tte \u201eZextras\u201c esindaja Katariina Triandafiliidiga e-posti teel katerina@zextras.com
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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R\u00e4mpsposti kahjulik m\u00f5ju on ilmselge: see ohustab ettev\u00f5tte infos\u00fcsteemi turvalisust, v\u00f5tab serveri k\u00f5vakettal ruumi ning v\u00e4hendab t\u00f6\u00f6tajate t\u00f5husust, kui see j\u00f5uab \u00abSaabunud kirjade\u00bb kausta. Soovimatute masspostituste eristamine t\u00f6\u00f6alastest kirjadest ei ole nii lihtne.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/zimbra-i-zashhita-ot-spama","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Zimbra \u0438 \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0442 \u0441\u043f\u0430\u043c\u0430 | ProHoster","og:description":"\u041e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u0437\u0430\u0434\u0430\u0447, \u0432\u0441\u0442\u0430\u044e\u0449\u0438\u0445 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