Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

POP3 550 5.7.1 Error

Posted on 2009-05-05
2
247 Views
Last Modified: 2013-11-30
I have enabled POP3 on my exchange server which works perfectly internally.  I have opened the necessary port 110 on the Firewall and can telnet to port 110 from an external source.  From the outside using Outlook I pass all tests and have a checkmark where my outgoing server requires authentication is located.  I can pull down messages but can not send to an external domain.  Any Help?
0
Comment
Question by:tdn9999
2 Comments
 

Author Comment

by:tdn9999
ID: 24304682
FYI...

My Exchange SMTP Relay Access is set to allow all computer which successfully authenticate to relay
0
 
LVL 65

Accepted Solution

by:
Mestha earned 250 total points
ID: 24305920
Port 110 is for POP3 only, when you are sending email it uses SMTP.
The authentication settings for SMTP need to be set specifically, and in the format of domain\user.

Although if this is Exchange 2003 or higher, why are you using POP3 anyway? Awful protocol. Preferred remote access solution is RPC over HTTPS/Outlook Anywhere.

Simon.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
MS Outlook is a world-class email client application that is mainly used for e-communication globally.  In this article, we will discuss the basic idea about MS Outlook, its advanced features, and types of MS Outlook File formats.
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
This video discusses moving either the default database or any database to a new volume.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question