{"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":"

\u00dcks peamisi \u00fclesandeid, millega ettev\u00f5tte oma postiserveri administraator silmitsi seisab, on filtrida e-kirju, mis sisaldavad r\u00e4mpsposti. R\u00e4mpsposti kahju on ilmselge: lisaks teabejulgeoleku ohule ettev\u00f5ttes, v\u00f5tab see serveri k\u00f5vakettal ruumi ning v\u00e4hendab t\u00f6\u00f6tajate efektiivsust, kui see satub 'Saabunud kiri' kausta. Eroideerimine soovimatu reklaami ja ametliku kirjavahetuse vahel ei ole nii lihtne \u00fclesanne, kui esmapilgul tundub. T\u00f5siasi on see, et lahendust, mis tagab 100% -lise tulemuse soovimatute e-kirjade kindlakstegemisel, lihtsalt ei eksisteeri, ja valesti seadistatud algoritm, mis tuvastab soovimatuid e-kirju, v\u00f5ib ettev\u00f5ttele teha palju rohkem kahju kui r\u00e4mpspost ise.<\/p>\n

\"Zimbra
\n<\/a><\/noindex>
\nZimbra koost\u00f6\u00f6komplektis on r\u00e4mpsposti kaitse rakendatud avatud l\u00e4htekoodiga tarkvara Amavis abil, mis rakendab SPF-i, DKIM-i ning toetab mustade, valgete ja hallide nimekirjade kasutamist. Lisaks Amavisele kasutatakse Zimbras viiruset\u00f5rje ClamAV-i ja r\u00e4mpspostifiltrit SpamAssassin. Praegu on just SpamAssassin optimaalseim lahendus r\u00e4mpsposti filtreerimiseks. Selle t\u00f6\u00f6p\u00f5him\u00f5te seisneb selles, et iga saabuv e-kiri kontrollitakse mustrite suhtes, mis on iseloomulikud soovimatule reklaamile. Iga edukalt l\u00e4bi viidud kontrolli j\u00e4rel, omistab SpamAssassin kirja teatud arvu punkte. Mida rohkem punkte koguneb kontrollimise l\u00f5puks, seda t\u00f5en\u00e4olisem on, et anal\u00fc\u00fcsitav kiri on r\u00e4mpspost.<\/p>\n

Selline sissetulevate e-kirjade hindamise s\u00fcsteem v\u00f5imaldab filtreid \u00fcsna paindlikult seadistada. Eelk\u00f5ige on v\u00f5imalik m\u00e4\u00e4rata punktide arv, mille korral kiri tunnistatakse kahtlaseks ja saadetakse kausta 'R\u00e4mpsposti', ning samuti on v\u00f5imalik m\u00e4\u00e4rata punktide arv, mille korral kiri kustutatakse j\u00e4\u00e4davalt. Kui sp\u00e4mmi-filter selliselt seadistada, saab lahendada kohe kaks k\u00fcsimust: esiteks v\u00e4ltida v\u00e4\u00e4rtusliku kettaruumi t\u00e4itmist kasutu r\u00e4mpspostiga ning teiseks minimeerida t\u00f6\u00f6 t\u00f5ttu sp\u00e4mmi-filtis kaduma l\u00e4inud ametlike kirjade arvu.<\/p>\n

\"Zimbra
\n
\nPeamine probleem, millega Venemaa Zimbra kasutajad v\u00f5ivad silmitsi seista, on sisseehitatud r\u00e4mpsposti filter, mis ei ole v\u00e4lja t\u00f6\u00f6tatud venekeelse r\u00e4mpsposti filtreerimiseks. Selle p\u00f5hjuseks on viisiku reeglite puudumine kirillitsas tekstis. L\u00e4\u00e4ne kolleegid lahendavad selle probleemi k\u00f5igi venekeelsete kirjade automaatse kustutamisega. T\u00f5epoolest, vaevalt keegi ratsionaalselt m\u00f5tleva ja kainena t\u00e4idaks ametlikku kirjavahetust Euroopa ettev\u00f5tetega vene keeles. Kuid Venemaa kasutajad ei saa seda teha. Probleemi osaliselt lahendamiseks v\u00f5ib lisada vene reeglid Spamassassini<\/a><\/noindex>, kuid nende asjakohasust ja usaldusv\u00e4\u00e4rsust ei saa garanteerida.<\/p>\n

T\u00e4nu laiale levikule ja avatud allikale on Zimbra Collaboration Suite'i v\u00f5imalik integreerida ka muid, sealhulgas kommerts\u00fcsteeme, mis tagavad infosisu turvalisuse. Siiski v\u00f5ib k\u00f5ige optimaalsem lahendus olla pilvep\u00f5hine k\u00fcberturvalisuse s\u00fcsteem. Pilveturbe seadistamine toimub tavaliselt nii teenusepakkuja kui ka kohaliku serveri poolel. Seadmise p\u00f5him\u00f5te seisneb selles, et siseneva e-posti kohaliku aadressi asemel kasutatakse pilveserveri aadressi, kus toimub kirjade filtreerimine, ning alles p\u00e4rast k\u00f5iki kontrollimisi saadetakse filtreeritud kirjad ettev\u00f5tte aadressile. <\/p>\n

Sellist s\u00fcsteemi \u00fchendatakse lihtsalt ip-aadresside<\/a> POP3-serveri siseneva posti jaoks MX-kirjes serveris, kasutades teie pilvelahenduse ip-aadressi. Teisis\u00f5nu, kui enne MX-kirje kohalik server n\u00e4gi 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 pilveturve pakutava aadressiga (eeldame, et see on 26.35.232.80), muutub kirje j\u00e4rgmiseks:<\/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 iseteeninduskeskkonnas seadmise ajal m\u00e4rkida domeeni aadress, millelt tuleb filtreerimata e-kiri, ja domeeni aadress, kuhu tuleb saata filtreeritud kirjad. P\u00e4rast neid toiminguid toimub teie posti filtreerimine kolmanda osapoole serverites, mis vastutavad ettev\u00f5tte siseneva posti turvalisuse eest.<\/p>\n

Seega sobib Zimbra Collaboration Suite suurep\u00e4raselt nii v\u00e4ikestele ettev\u00f5tetele, kes otsivad v\u00f5imalikult odavat, kuid samas turvalist lahendust e-posti jaoks, kui ka suurtele ettev\u00f5tetele, kes pidevalt t\u00f6\u00f6tavad k\u00fcberohtudega seotud riskide v\u00e4hendamise nimel.<\/p>\n

K\u00f5ikidel k\u00fcsimustel, mis on seotud Zextras Suite'iga, p\u00f6\u00f6rduge ettev\u00f5tte \u00abZextras\u00bb esindaja Katariina Triandafiliidi poole e-posti aadressil katerina@zextras.com.
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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