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2
votes
1answer
181 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
vote
0answers
147 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
40 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
36 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
0answers
90 views

Custom Transport Agent: How do I collect NDRs and all other undeliverables in Exchange 2010 from the Postmaster?

I'm trying to collect all NDRs in a single mailbox for all invalid recipients, and anything that fails for any reason. I have a custom transport agent, that I've written myself that appears here: ...
0
votes
0answers
203 views

Prevent auto forwarding NDR loops

a week ago we experienced a really sweet problem at a client of ours. They are a school with around 1200 users, and everyone of them has auto forwarding for all mail activated. We use Exchange 2010 ...
1
vote
1answer
259 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 ...
1
vote
3answers
5k 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
289 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
vote
1answer
1k 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
157 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
2k 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
375 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 ...
1
vote
1answer
4k 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 ...
0
votes
1answer
644 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 ...
1
vote
1answer
529 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
109 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 ...
0
votes
2answers
1k 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
4k 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
votes
1answer
415 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
951 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
553 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
689 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 ...