Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Emails not being delivered to comcast or aol when relaying from iis through exchange 2003

Posted on 2010-08-24
7
Medium Priority
?
934 Views
Last Modified: 2012-05-10
Ok I have a quandry.

Emails sent to aol or comcast.net normally go through without a hitch from our exchange server. tested and works fine.

The issue arises when i have to relay an email from the webserver through the exchange server.

below is some of the code i use. it works when sending to any other domain, like gmail, but not aol and comcast.

can someone shed some light on this?
SmtpClient myClient2 = new SmtpClient("mail.server.net", 110);
        myClient2.UseDefaultCredentials = false;
        myClient2.Credentials = new System.Net.NetworkCredential("administrator@server.net", "password");

Open in new window

0
Comment
Question by:innotionent
[X]
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
  • 3
  • 3
7 Comments
 
LVL 9

Expert Comment

by:Barry Gill
ID: 33518925
what do your logs say?

Also, as these two machines are both behind your firewall (I assume) then does mail.server.net resolve to a local address for the weserver? if not, then a firewall rul may be preventing traffic from your network being bounced against it and redirected to back inside your network.

Another thing to check is are the messages being delivered by Exchange? do they get into a queue? Is comcast blocking them? thi can be found from the logs.

Can you confirm that your server is allowing basic authentication from the webserver IP address?
0
 
LVL 5

Author Comment

by:innotionent
ID: 33521120
I will check the logs to see what is going on.

Mail goes out from the webserver to gmail, yahoo and our mailserver and other mailservers just fine.

It's AOL and Comcast that's the issue.
0
 
LVL 9

Expert Comment

by:Barry Gill
ID: 33521419
they have their own specialist RBL's and some unique handling requirements
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 5

Author Comment

by:innotionent
ID: 33521870
I think my issue is that even though I'm specifying the smtp server. it's still putting headers from the mail server.

i need to send from the mail server exclusively
0
 
LVL 9

Expert Comment

by:Barry Gill
ID: 33521908
sorry, I misread that as "you send to gmail etc through the smarthost already just aol/comcast don't get it"
do you want to send one to me at barrulus at outies dot co dot za and I will have a look at the headers?
0
 
LVL 5

Accepted Solution

by:
innotionent earned 0 total points
ID: 33546022
I figured it out.
i had pickupfromiis set instead of network.
after i changed that it started to work fine.
0

Featured Post

Office 365 Training for Admins - 7 Day Trial

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

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

Check out this step-by-step guide for using the newly updated Experts Exchange mobile app—released on May 30.
I don't pretend to be an expert at this, but I have found a few things that are useful. I hope that sharing them here will help others, so they will not have to face some rather hard choices. Since I felt this to be a topic of enough importance and…
In this video we show how to create a Shared Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Sha…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
Suggested Courses

715 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