1. 기
@river

2. PTMS
MTA(Message Transfer Agent)
MUA(Mail User Agent)

3. locotorP PTMS

4. retteL ,epolevnE
- Envelope
Letter
.

5. retteL ,epolevnE

6. ,
.

7. mapS itnA
Authentication: SPF, Sender ID, DKIM
Reputation: Blacklist, Volume/rate, User
voting, Bounce mgt, Behavior
Content Filtering: Images, Copy,
Construction, Subject, Linkes

8. SND esreveR
- Reverse DNS

9. - HTML
- SPF
DKIM DNS
IP
MIKD ,FPS : noitacitnehtuA

10. - SPF
/ Test Tool
DNS
- SPF
)krowemarF yciloP redneS(FPS

11. elpmaxE droceR SND FPS
epaaalnt I TT
clzmi.e. N X
"=p1i423222022-l"
vsf p:0.4.1.2 al
$dgepaaalnttx +hr
i clzmi.e et sot

12. -
'
'
)liaM
deifitnedI yeK niamoD(MIKD

13. elpmaxE droceR SND MIKD
mi.dmikyepaaalnt I TT"=KM;
al_oane.clzmi.e. N X vDI1
kra pMwDYKZhcAEBAaAaJAMaA
=s; =HwQJoIvNQBQDwwAhOdml
eOGsQP/ex3FJIVM1rPfbWzzUm
kq/a9giKC4Bje343GjOC2B2K
0ptJGeK+NSOqeUQNG36sqcuaT
iUDL/fBNv3pI7Yqsv9ehp+xC
pB6CxF8DyvdeIAA"
vSaghRRjEIOQDQB
$dgmi.dmikyepaaalnttx +hr
i al_oane.clzmi.e et sot

14. elpmaxe liame koobecaF

16. secnuoB
What happens when mail could not be
delivered?
- 5xx
- Mail Delivery Notification (MDN)
- Delivery Status Report (DSN)

17. htaP nruteR
- Return Path is another name for the
envelope sender
- It's the address to which bounces should
be sent
- It's usually the same as the From:
address
- But can be changed in transit using
schemes like SRS

18. )shtaP nruteR
epolevnE elbairaV(PREV
Rtr-ah:<one-e=miicmeapecm
eunPt
bucswzont.o@xml.o>
Fo :"yls"<yls@xml.o>
rm
m it m-iteapecm
T :wzont.o
o
e@miicm
Sbet:amsae
ujc
esg
Wloet m wrd!
ecm o y ol!!
- User replies go to my-list@example.com
- Bounces go to bounceswez=omniti.com@example.com

20. ecnuoB draH
- Recipient email address does not exist
- Domain name does not exist
- Recipient email server has completely
blocked delivery

21. ecnuoB tfoS
- Mailbox is full(over quota)
- Recipient email server is down or offline
- Email message is too large

22. gniretliF stnetnoC
- Don't use IP address for links
(http://193.24.33.1/page/)
- using both text and HTML or text only
- The higher the text to link and text to
image ratios, the better
- Unsubscribe link

23. gnilttorhT
Limit send speed per domain
40tofeun cnet fo 183.4.3,
5 o rqet oncs rm 9.71715
pes tyaanltr (hote)
lae r gi ae. trtld

24. - IP Reputation

25. 결
third party
MailChimp
12,000 emails/month free
.

26. uoY knahT