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Microsoft Exchange Server 2003, changed ISP, can't receive or send emails

Everything was working fine until we changed our Internet Service Provider. Emails are not being received and sent. We have microsoft exchange 2003, dyndns and mailhop which are handling our emails. Mailhop (Dircircle) send all emails are stuck and it seems a port is being blocked. Any body with any idea's or thoughts if they can fix it.

Evner: Microsoft Exchange, Netværksadministrator

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Om arbejdsgiveren:
( 2 bedømmelser ) Scarborough, Canada

Projekt ID: #12266929

Tildelt til:

tomerrouah

Hello, My name is Tomer I'm an Infrastructure Specialist with 16 Years of Industry Experience. I have a lot of experience within the IT world especially in : * Windows Servers * Active Director Flere

$66 CAD på 1 dag
(88 bedømmelser)
6.3

10 freelancere byder i gennemsnit $70 på dette job

RWHTech

I've been in IT for nearly 20 years and have done my share of troubleshooting. I'm just bidding to let you know you're on the right path. It's very possible your ISP blocks outbound port 25, so that's the first thing Flere

$73 CAD på 1 dag
(118 bedømmelser)
6.0
engrgulnawaz

Hi, I will be pleased to join your project as i possessed the required skills and experience. I have excellent skills on networking, security, technical/report writing, Linux, penetration testing, windows server's, MS Flere

$50 CAD på 1 dag
(56 bedømmelser)
5.4
roshanvip

Hello I can trouble shoot the issue and resolve. Need access to devices (Router or firewall ) first to check the issue . I will inform the issue before applying corrections Cheers

$25 CAD på 1 dag
(13 bedømmelser)
3.9
Trollmin

I am ex-Microsoft employee working as part of their tier 2 Microsoft Office 365 Exchange/Lync team. I also currently have a self-hosted exchange farm I use for my personal email and have worked as part of the Exchange Flere

$25 CAD på 1 dag
(0 bedømmelser)
0.0
mannygarcia2016

I cam get this fix in 6 hrs.

$277 CAD på 1 dag
(0 bedømmelser)
0.0
mikeal2020

-hi how are you :) tell me more about your need to know how i can start help you now waiting your email thanks

$111 CAD på 1 dag
(0 bedømmelser)
0.0
tahasaifeee

I am writing to express my keen interest for the position of (IT Support / Windows & VMware System Administrator / Network Administrator). My resume is attached along for your review. I am confident that my skills and Flere

$25 CAD på 1 dag
(0 bedømmelser)
0.0
jeffestella

Hi, I am well-versed both in networking and systems administration. It is a rare skill that only rare people and glad that I'm one of them. Please check my profile regarding my experience. Regards, Jefferson E Flere

$25 CAD på 1 dag
(0 bedømmelser)
0.0
MarvinFS

Dear sirs, My name is Vladimir, i'm a expert with more than 24 years of IT-related experience. Server hardware\software and infrastructure solutions expert. Wide experience in IT gamut, from concept tech solution Flere

$25 CAD på 1 dag
(0 bedømmelser)
0.0