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0
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1answer
195 views

Single User cannot send email to public folder - exchange 2010

I have a single internal user who is receiving the following NDR when sending mail to a mail enabled public folder. It is fine for all other users, internal and external. I'm waiting to hear back from ...
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votes
0answers
41 views

IIS 6.0 SMTP not sending NDR to user from web application

We have a web application that is configured to use an internal mail relay running on Windows Server 2012 R2, IIS 6.0 for the SMTP though. I just put this server in place as a replacement for an old ...
1
vote
0answers
138 views

Exchange 2010: not receiving NDR when sending email using SMTP to none existing external mailbox

We are sending email using smtp port 25 in a local Exchange 2010 server We do not set username nor passwords in the SMTP connection, only "form" address. Mails are sent to external recipients after ...
2
votes
1answer
495 views

Moving X400 address to user's new mailbox, internal NDR

We have a user who has had access to his old mailbox restricted by management. However, they want them to continue to receive mail in a new mailbox using the same SMTP address. The situation is, the ...
1
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0answers
411 views

Exchange 2013 NDR attack

Recently I setup an exchange server 2013 sp1 on windows 2012 R2 and now it is under reverse ndr attack. I just have one server with Mailbox server role and CAS role on it. I don't want to disable ndr ...
1
vote
1answer
178 views

What is the correct way to get an NDR to be sent when a bounce back occurs?

I have a user who developed a WebApp that sends SMTP messages. Users are able to reply to the message using a MUA (outlook, whatever) but there is no NDR if the user doesn't exist. I suspect that ...
0
votes
1answer
61 views

Google gmail block for no ptr of 4to6 ip address

When mail server got only ipv4 address and enabled 4to6 interface, gmail server block mail because of no ptr record of 4to6 address. Why...? Isn't 4to6 address not global standard...?
1
vote
1answer
466 views

Exchange 2010 oversized mail notification

Earlier we have Exchange 2003. In exchange 2003 when set the maximum size of sending / receiving mail, we can set an e-mail address where we see a notice if we have an undeliverable mail. Now we ...
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3answers
10k views

Hotmail Senders receiving NDR : “550-Please turn on SMTP Authentication in your mail client…”

Recently, senders from Hotmail have begun to get the following NDR when trying to e-mail our domain. EDIT : Full NDR Message Action: failed Status: 5.5.0 Diagnostic-Code: smtp;550-Please turn on ...
2
votes
1answer
349 views

Tracking 5.1.1 User Unknown in Exchange

We recently discovered that one of our mailboxes was missing an important email alias, because the person that did our marketing forgot to ask for it to be created. Is there any way in Exchange that ...
1
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1answer
4k views

What is the role of the “generating server” and/or “Reporting-MTA” in an Exchange NDR?

I'm a little confused on what exactly the "generating server" does in an NDR. For example, I got the following NDR back when sending to a specific domain: Diagnostic information for administrators: ...
1
vote
0answers
194 views

IIS 6.0 and Virtual SMTP relay ~ some messages are bouncing

I will give a quick overview and then the details. I have a Exchange 2003 environment that I have been asked to slap on a disclaimer on all outgoing mail. So I have setup a Windows 2003 server and ...
0
votes
1answer
4k views

What software generates the SMTP bounce message “550 Envelope blocked - User Entry”?

I'm troubleshooting an issue where email sent from a specific user is blocked every time to only a specific sender. The NDR generated (from our Exchange server) has the following message: #550 ...
2
votes
1answer
550 views

Exchange 2003, disable NDR

How do I completely disable NDR messages in Exchange 2003? I don't want Exchange to send any non delivery reports anymore. I did already: From Exchange System Manager, Global Settings, Internet ...
4
votes
1answer
5k views

Exchange 2003 mail non-delivery (NDR), spam activity? events 7002 & 7004

Windows Server 2003 Small Business Server SP2 Exchange Version 6.5 (Build 7638.2: Service Pack 2) This network has been neglected and has been having email problems for years and was on many ...
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votes
1answer
1k views

Reverse DNS entry for sending secure email?

I'm having problem like the following when I tried to send to abacus@abacusevents.com: Diagnostic information for administrators: Generating server: mail.domain.com abacus@abacusevents.com mail....
1
vote
1answer
1k views

email server have no reverse DNS entry

I'm having problem with one of my target email recipient, when I tried to send email to abacus@abacusevents.com, I got this error message from my email server: Diagnostic information for ...
0
votes
1answer
111 views

SBS migration: NDRs when sending email to olddomain.local addresses

Just swapped in a new SBS 2008 server today. Did not perform a migration this time (old server was a mess), but chose a completely new domain and migrated everything over manually. Went well, only ...
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votes
2answers
2k views

550 5.1.1 relay denied NDR Error

I'm having problem with my email getting rejected like the following NDR, can anyone know or help me how to prevent this blockage please ? From: Administrator Sent: Monday, 1 November 2010 3:35 PM ...
0
votes
2answers
6k views

#550 5.6.0 M2MCVT.StorageError; storage error in content conversion ##

We are getting this error on one user's computer, running Windows 7 and Outlook 2007 in a domain environment. Exchange Server is 2007. It only happens occasionally for random email addresses, ...
0
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1answer
461 views

Exchange Server 2003 random NDR's and DNS

We run an Exchange 2003 email server which also doubles as a SDC / DNS server. The PDC also serves DNS requests too. Every now and again an email will fail. Where the email is going to or coming from ...
2
votes
3answers
1k views

Exchange 2007 NDRs

We have NDRs disabled on our Exchange 2007 server to prevent backscatter. Is there any way to enable NDRs only when messages exceed size limits? It can be frustrating for people when their messages ...
1
vote
2answers
641 views

Sporadic email delivery to one user

I have a user that occasionally does not receive emails from outside our organization. It does not seem to matter whether the other person is replying to an initial email or sending a new message. I ...
0
votes
2answers
747 views

Exchange - No NDR

I try to send a test email from my personal email account to a non-existent email in my company's domain. I don't receive NDR at all. I'm under Exchange 07 SP1. Where can I configure it ? Thx for ...
1
vote
4answers
3k views

Sending bounce mail messages customized for employees no longer with the company

Currently we use a hosting company for our Exchange services. We are considering a switch to Google apps, but that is in a pilot program at the present time. Our Exchange provider and Google Apps ...
0
votes
4answers
2k views

SBS 2003 suddenly not delivering emails to outside domains

This afternoon our server in the office suddenly started refusing to deliver mail to outside domains - email for our domain is still delivered. I've tried Googling around and I can't find anything ...
1
vote
6answers
1k views

How to handle invalid email addresses?

My server is windows server 2003. I got a huge list of subscribers. Lots of them have invalid email like, user@yahoooooo.com, user@gmailyahoo.com, user@homail.com... I want to send a email to all my ...