{"id":8479,"date":"2022-04-01T14:51:23","date_gmt":"2022-04-01T07:51:23","guid":{"rendered":"https:\/\/hostify.vn\/blog\/?p=8479"},"modified":"2022-04-01T14:51:23","modified_gmt":"2022-04-01T07:51:23","slug":"junk-mail-la-gi-cach-gui-email-bi-roi-vao-spam","status":"publish","type":"post","link":"https:\/\/www.hostify.vn\/blog\/junk-mail-la-gi-cach-gui-email-bi-roi-vao-spam\/","title":{"rendered":"Junk mail l\u00e0 g\u00ec? C\u00e1ch g\u1eedi email kh\u00f4ng b\u1ecb r\u01a1i v\u00e0o Spam Mail"},"content":{"rendered":"

C\u00f3 l\u1ebd Junk mail l\u00e0 m\u1ed9t t\u1eeb kh\u00e1 quen thu\u1ed9c v\u1edbi ng\u01b0\u1eddi s\u1eed d\u1ee5ng email, v\u00ec hi\u1ec7n nay h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng mail, c\u00e1c mail client \u0111\u1ec1u t\u1ed3n t\u1ea1i folder Junk mail. V\u1eady b\u1ea1n c\u00f3 bi\u1ebft Junk mail l\u00e0 g\u00ec?<\/a><\/strong> T\u1ea1i sao mail l\u1ea1i n\u1eb1m trong Junk mail m\u00e0 kh\u00f4ng ph\u1ea3i Inbox? B\u00e0i vi\u1ebft n\u00e0y, Hostify<\/strong> s\u1ebd gi\u1ea3i \u0111\u00e1p cho c\u00e1c b\u1ea1n v\u1ec1 kh\u00e1i ni\u1ec7m n\u00e0y nh\u00e9<\/p>\n

\"Junk<\/h2>\n

Junk mail l\u00e0 g\u00ec ?<\/a><\/h2>\n

Junk mail<\/strong> l\u00e0 thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 ch\u1ec9 nh\u1eefng email c\u00f3 ch\u1ee9a n\u1ed9i dung m\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng mong mu\u1ed1n nh\u1eadn \u0111\u01b0\u1ee3c, \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 c\u00e1c qu\u1ea3ng c\u00e1o kh\u00f4ng c\u00f3 \u00edch hay th\u1eadm ch\u00ed l\u00e0 n\u1ed9i dung c\u00f3 ch\u1ee9a file virus ho\u1eb7c m\u00e3 \u0111\u1ed9c… Nh\u1eefng email n\u00e0y \u0111\u00f4i l\u00fac c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 th\u01b0 r\u00e1c.<\/p>\n

Khi \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n l\u00e0 Junk Mail<\/strong>, email s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n v\u00e0o h\u1ed9p Spam\/Junk. Tuy nhi\u00ean, h\u1ec7 th\u1ed1ng nh\u1eadn di\u1ec7n n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 l\u1ecdc email theo m\u1ed9t s\u1ed1 ti\u00eau ch\u00ed nh\u1ea5t \u0111\u1ecbnh m\u00e0 kh\u00f4ng t\u1ed1i \u01b0u. Nh\u01b0 m\u1ecdi lo\u1ea1i c\u00f4ng c\u1ee5, kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ch\u00ednh x\u00e1c. \u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p m\u1ed9t s\u1ed1 th\u01b0 quan tr\u1ecdng c\u0169ng c\u00f3 th\u1ec3 b\u1ecb coi nh\u1ea7m l\u00e0 th\u01b0 r\u00e1c v\u00e0 chuy\u1ec3n v\u00e0o Spam<\/p>\n

Nguy\u00ean nh\u00e2n Email g\u1eedi b\u1ecb v\u00e0o Junk Mail<\/h2>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 10 nguy\u00ean nh\u00e2n khi\u1ebfn mail b\u1ecb li\u1ec7t v\u00e0o Junk\/Spam.<\/p>\n

IP Mail b\u1ecb li\u1ec7t v\u00e0o black list<\/h3>\n

Nguy\u00ean nh\u00e2n khi\u1ebfn r\u1ea5t nhi\u1ec1u email b\u1ecb \u0111\u00e1nh v\u00e0o h\u1ed9p th\u01b0 spam l\u00e0 do \u0111\u1ecba ch\u1ec9 IP \u0111\u00e3 b\u1ecb \u0111\u01b0a v\u00e0o danh s\u00e1ch \u0111en. \u0110\u1ec3 bi\u1ebft li\u1ec7u IP mail c\u1ee7a m\u00ecnh c\u00f3 n\u1eb1m trong danh s\u00e1ch n\u00e0y kh\u00f4ng, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng mxtoolbox b\u1eb1ng c\u00e1ch truy c\u1eadp https:\/\/mxtoolbox.com\/blacklists.aspx.<\/p>\n

N\u1ebfu k\u1ebft qu\u1ea3 tr\u1ea3 v\u1ec1 l\u00e0 LISTED: \u0111\u1ed3ng ngh\u0129a IP c\u1ee7a b\u1ea1n \u0111\u00e3 b\u1ecb li\u1ec7t v\u00e0o danh s\u00e1ch Blacklist. M\u1ecdi email g\u1eedi \u0111i s\u1ebd r\u01a1i v\u00e0o h\u00f2m Spam c\u1ee7a c\u00e1c mail server nh\u01b0 Gmail, Yahoo,\u2026 Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n h\u00e3y ki\u1ec3m tra l\u1ea1i c\u00e1c ti\u00eau ch\u00ed \u0111\u1ec3 g\u1ee1 IP ra kh\u1ecfi danh s\u00e1ch tr\u00ean.<\/p>\n

\"Junk<\/p>\n

Ch\u01b0a tr\u1ecf PTR Record<\/h3>\n

Tr\u1ecf PTR Record c\u00f3 nhi\u1ec7m v\u1ee5 tr\u00e1nh x\u1ea1 \u0111\u1ecba ch\u1ec9 IP \u0111\u1ebfn t\u00ean mi\u1ec1n. Thao t\u00e1c n\u00e0y s\u1ebd gi\u00fap b\u1ea1n t\u0103ng \u0111\u1ed9 tin c\u1eady cho mail server.<\/p>\n

Khi mail server c\u00f3 \u0111\u1ed9 tin c\u1eady nh\u1ea5t \u0111\u1ecbnh, n\u00f3 s\u1ebd kh\u00f4ng b\u1ecb \u0111\u00e1nh gi\u00e1 l\u00e0 Junk Mail v\u00e0 kh\u00f4ng b\u1ecb \u0111\u01b0a v\u00e0o spam. \u0110\u1ec3 ki\u1ec3m tra xem mail server \u0111\u00e3 tr\u1ecf v\u00e0o PTR Record ch\u01b0a, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng https:\/\/intodns.com\/.<\/p>\n

K\u1ebft qu\u1ea3 hi\u1ec3n th\u1ecb d\u1ea5u (!) l\u00e0 email ch\u01b0a\u00a0 tr\u1ecf PTR Record. L\u00fac n\u00e0y, h\u00e3y tr\u1ecf PTR Record \u0111\u1ec3 email g\u1eedi \u0111i c\u1ee7a b\u1ea1n ghi \u0111i\u1ec3m h\u01a1n v\u1edbi Google v\u00e0 kh\u00f4ng b\u1ecb \u0111\u01b0a v\u00e0o spam.<\/p>\n

Ch\u01b0a c\u1ea5u h\u00ecnh SPF record<\/b><\/h3>\n

SPF record hay Sender Policy Framework (SPF) l\u00e0 c\u01a1 ch\u1ebf \u0111\u00e1nh gi\u00e1 email c\u00f3 ph\u1ea3i l\u00e0\u00a0Junk Mail\u00a0<\/b>hay kh\u00f4ng? C\u01a1 ch\u1ebf n\u00e0y ph\u00e1t hi\u1ec7n c\u00e1c email gi\u1ea3 m\u1ea1o b\u1eb1ng c\u00e1ch ki\u1ec3m tra email \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb domain n\u00e0o v\u00e0 domain n\u00e0y c\u00f3 thu\u1ed9c ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb \u0111\u00f3 hay kh\u00f4ng.<\/p>\n

Record TXT SPF v\u00ec v\u1eady c\u00f3 vai tr\u00f2 h\u1ebft s\u1ee9c quan tr\u1ecdng trong vi\u1ec7c t\u0103ng \u0111\u1ed9 tin c\u1eady cho email g\u1eedi \u0111i.<\/p>\n

Ch\u01b0a c\u1ea5u h\u00ecnh DKIM<\/b><\/h3>\n

DKIM (Domainkeys Identified Mail)<\/strong>\u00a0c\u00f3 nhi\u1ec7m v\u1ee5 x\u00e1c th\u1ef1c email b\u1eb1ng ch\u1eef k\u00fd s\u1ed1 c\u1ee7a domain g\u1eedi th\u01b0. Kh\u00f3a c\u00f4ng khai \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean DNS d\u01b0\u1edbi d\u1ea1ng m\u1ed9t\u00a0TXT record<\/strong>, kh\u00f3a c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh trong mail server. N\u1ebfu ch\u01b0a c\u1ea5u h\u00ecnh DKIM, email c\u1ee7a b\u1ea1n c\u0169ng r\u1ea5t d\u1ec5 r\u01a1i v\u00e0o Spam\/Junk.<\/p>\n

B\u1ea1n c\u00f3 th\u1ec3 xem th\u00eam b\u00e0i vi\u1ebft v\u1ec1 DKIM<\/a><\/p>\n

N\u1ed9i dung email b\u1ecb \u0111\u00e1nh gi\u00e1 spam<\/h3>\n

N\u1ed9i dung c\u1ee7a email c\u0169ng l\u00e0 y\u1ebfu t\u1ed1 mang t\u00ednh quy\u1ebft \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi vi\u1ec7c email c\u00f3 b\u1ecb \u0111\u00e1nh gi\u00e1 l\u00e0 Junk Mail<\/strong> hay kh\u00f4ng. H\u00e3y ch\u1eafc r\u1eb1ng email kh\u00f4ng ch\u1ee9a nh\u1eefng n\u1ed9i dung sau \u0111\u00e2y, b\u1edfi n\u00f3 ch\u1eafc ch\u1eafn s\u1ebd khi\u1ebfn Google \u0111\u00e1nh email c\u1ee7a b\u1ea1n v\u00e0o spam kh\u00f4ng th\u01b0\u01a1ng ti\u1ebfc.<\/p>\n