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Fix mailserver (dovecot/exim) configs

I need someone to fix a couple of bugs in our mailserver configuration. I believe we are currently using Dovecot and exim.

Mail whose 'Envelope-from' is a domain configured on our server should be accepted only if the user has authenticated. The same check should (I think) be applied before generating error messages to the alleged sender's mailbox.

At present, spammers seem able to send messages from user1@ourdomain to user2@ourdomain without any authentication. If user2 doesn't exist, user1 gets a bounce message. If neither user exists, the bounce lands in my catchall maildir.

OPTIONAL: If possible, I'd like to set it up such that an authenticated SMTP user can send messages only from their own address(es). If you can do this, please let me know, as I'd be willing to pay more for this functionality. This should be able to work out which users would be able to read a message sent to the alleged sender's address. (please ask if this isn't clear, I could probably explain more clearly in a dialogue)

Taidot: Tietoturva, Linux, Komentosarjan asennus, Järjestelmänvalvoja

Näytä lisää: dovecot exim, dovecot exim smtp authentication, exim4 configuration authentication dovecot, smtp fixed mail server, smtp postfix, dovecot redundant, envelope stuffer, authentication server, domain key, read messages, mailserver, mail fix, envelope, domain bounce, fix mail, pay fix, bounce script, script sender, smtp server domain, authenticated, bounce server, catchall mail, smtp server configuration, smtp domain, check user domain

About the Employer:
( 1 review ) Lancaster, United Kingdom

Projektin tunnus: #444335

23 freelanceria on tarjonnut keskimäärin 90 $ tähän työhön

nknk

Hi. That's my specialty. Please check PM.

80 $ USD 3 päivässä
(218 arvostelua)
7.2
TheAce

I'm a linux server administrator with experience in configuring mail servers and I can help you with your spam issues as well as the SMTP authentication. Please PM and explain about the additional requirement.

50 $ USD 1 päivässä
(118 arvostelua)
6.9
shakoush2001

Please check PM

50 $ USD 1 päivässä
(81 arvostelua)
6.6
linuxsupport

Please check PM.

40 $ USD 1 päivässä
(75 arvostelua)
6.1
itamarjp

I can switch your mail server to qmail, you will be more happy than using exim. exim is slow and will eat your CPU :-)

250 $ USD 5 päivässä
(89 arvostelua)
5.7
jayantvr

Please see PM

30 $ USD 3 päivässä
(73 arvostelua)
5.1
mistehbab

Hello, I have 8 years experience working as system admin. I can help. More in PMB

80 $ USD 3 päivässä
(20 arvostelua)
5.2
ayanbishnu

Myself is a SYS admin and Cpanel admin for linux based hosting & maintainance. Faced a similar problem with SMTP. BUT I GOT IT SOLVED. SO THE SOLUTION IS READY FOR YOU

150 $ USD 1 päivässä
(3 arvostelua)
3.1
VIServices

Greetings! We, at V I Services, have been delivering Remote IT infrastructure Management (RIM) Services successfully to clients across the globe. Our experienced Windows and Linux Support team members with the su Lisää

50 $ USD 2 päivässä
(14 arvostelua)
4.7
Viper5

Hello, I can resolve this issue in the mentioned time

60 $ USD 5 päivässä
(1 arvostelu)
2.0
izk

Pro admin ready to help + implement the ip - coded senders only.

30 $ USD 0 päivässä
(1 arvostelu)
1.4
servermanagement

Hello, I am from [url removed, login to view] company providing server management solution. We can fix your server related issues and provide long term support as well. If interested contact me at admin at servermanagemen Lisää

65 $ USD 2 päivässä
(0 arvostelua)
0.0
eSoftInc

Please check PMB and feel free to contact us at any [url removed, login to view] make sure that issue will be vanished. Thanks in advance Team eSoft Technologies Ltd [url removed, login to view]

100 $ USD 2 päivässä
(0 arvostelua)
0.0
matteocisilino

Experienced System Administrator on Linux . I provide assistence on systems with Postfix, Exim and Qmail .

45 $ USD 1 päivässä
(0 arvostelua)
0.0
rajeevpratap

I will do it.

125 $ USD 2 päivässä
(0 arvostelua)
0.0
csparks

I administer qmail(gmail, yahoo, etc) email systems for iguananet.com. please see pmb

50 $ USD 0 päivässä
(0 arvostelua)
0.0
srajagopal

Hi, I would like to take up this task. I have very good exp. in Server Management and Administration for over 7+ yrs. Please check my PMB for more details. Thanks, Raj

49 $ USD 2 päivässä
(0 arvostelua)
0.0
Protocolglobal

we have a team of experts at protocolglobal which can assist you in this..

100 $ USD 2 päivässä
(0 arvostelua)
0.0
xc0der

i can do this for you, please check pmb.

50 $ USD 2 päivässä
(0 arvostelua)
0.0
devasnitin

I can fulfill your requirements.

250 $ USD 4 päivässä
(0 arvostelua)
0.0