Message could not be delivered. Never happened with Entourage.

I have tried to migrate from Entourage to Mail. However, I keep getting the message could not be delivered....message. After the message sits in the outbox for a while some messages will finaly send. I have checked the outgoing settings and everything seems to be acurate. I've searched the boards and others seem to have this problem. I've moved messages to the draft folder, trashed the Outbox.mbox, relaunched. Nothing seemed to make a difference. I'm sending the exact same way with the same equipment (besides the computer, new MacBook) and never had this problem with Entourage.
Any Ideas?
Many thanks!
Trey

At my friends house (where I never used to have a problem) or here in the Atlanta airport I keep getting this message.
This is probably because the ISP at those locations are blocking the ports you need. If you want to send e-mail messages from those locations, you will probably need to use the outgoing mail server for that ISP.
When I visit the in-laws I use their ISP's outgoing mail server. When I am at a hotel usually the only way to send mail is via a web interface to my account.

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Why is Messages saying all my Sent messages "could not be delivered" when they have gone through?

Within the last few days, Messages on my Macbook Pro (Retina, 15") is showing the "could not be delivered" red circle with a white "!" after every message I send out to another Messages user. I can see that the messages were delivered by looking at the same thread on my iPhone (iOS 7.1) and the recipient gets all of them as well. The recipient is seeing these messages appear on their iPhone -- and likely their iPad mini as well.
I've tried deleting the conversation and restarting the Macbook Pro thinking it could be a temporary glitch. The problem still occurs, though. Everything I send from Messages on my laptop (to the same user) shows as not having been delivered, though they have been.
Any thoughts? Solutions?
Thanks in advance!

Hi,
Once you have sent an iMessage the server "pushes" at the contact and all the devices they have linked to the iPhone Number or Apple ID.
It continues to Push for some time if one devices does not give a response.
However in the meantime the iMessage may have been delivered to an iPhone of iPad.
It may not get delivered to a Mac for instance and it is the feedback that this has not happened that can give you the "Not Delivered" message.
Of course that are variants depending if you are "aiming at" the iPhone Number rather than the Apple ID and if the iPhone is not on WiFi or a suitable Carrier alternative like 3G.
It's a bit like sending an email to 20 people and only getting 19 acknowledgements.
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 iMac 2.5Ghz i5 2011 (Mavericks 10.9)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
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Message could not be delivered to mobile.

Suddenly I'm unable to send a pic message to my phone via email. I've always been able to send pics that I've uploaded to my computer from my digital camera through my email program using [email protected]
Now when I sent one I get an error message via an mail from MMSC NDR Administrator ([email protected]) that says:
Subject is: Undeliverable message
Message could not be delivered to mobile.
Error: Failed Parsing MM3 headers
I can send a message from my email using [email protected] but not even a plain text email will go through using [email protected]
Anyone else having this problem?
Any suggestion as to why this has started happening?
Thanks in advance for any info!

DreaminLg wrote:
Suddenly I'm unable to send a pic message to my phone via email. I've always been able to send pics that I've uploaded to my computer from my digital camera through my email program using [email protected]
Now when I sent one I get an error message via an mail from MMSC NDR Administrator ([email protected]) that says:
Subject is: Undeliverable message
Message could not be delivered to mobile.
Error: Failed Parsing MM3 headers
I can send a message from my email using [email protected] but not even a plain text email will go through using [email protected]
Anyone else having this problem?
Any suggestion as to why this has started happening?
Thanks in advance for any info!
Are they in JPEG format? Did you try from another e-mail address besides just the one?

This message could not be delivered because your SMTP settings are not set. Please use the Accounts Preferences panel to set the SMTP options for your account.

I am not able to send out an email. I keep getting the following message: This message could not be delivered because your SMTP settings are not set. Please use the Accounts Preferences panel to set the SMTP options for your account. Can someone help me with this?

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"message could not be delivered"

MAILER-DAEMON are replying that message can not be delivered when sendin to my mac addresses!?
this started last night.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.

Nothing made sense I thought but I just recieved an answer from my web host and they explained it like this:
Our technicians are aware about this issue and they have contacted the proof point support to get the block removed
This should be done in the next couple of days and then you shoudl be able to send emails without any issues
No explanation though why there was a block.
Thanks

This message could not be delivered?

I bought a .Mac account and it set up everyone on my computer automatically. When I open Mail and try to send mail I get an error message saying:
This message could not be delivered and will remain in your Outbox until it can be delivered.
The connection to the server "smtp.mac.com" on port 25 timed out
I can receive mail just fine, but I'm having this issue sending out mail. Any help would be appreciated.

Some ISPs block access to SMTP servers other than their own to reduce the amount of spam sent from their networks; outgoing SMTP traffic uses port 25. Either contact your ISP, use your ISP's mail server, or use a webmail service to send mail.
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I am getting an error message with my iPhone whenever I try to access my data with no wifi. It says "could not activate cellular data network". This just started today and has never happened before. Did I change a setting or something?

Hello, romac12.
Thank you for visiting Apple Support Communities.
I have experienced this issue before. If there have been any changes to your cellular account such as adding a line, plan change or upgrade, more than likely there is a provisioning issue on the carrier end. However, I would recommend going through the troubleshooting steps in the article below. If the issue persists, see step 9.
iPhone: Troubleshooting a cellular data connection
http://support.apple.com/kb/ts3780
Cheers,
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Error:Message could not be delivered will remain in Outbox

The error message further states that "The server*** cannot be contacted on port 25" This happens when the computer is sleeping and an alarm is sent from iCal. On my older computer, the mail would open automatically and display the alarm message as soon as I opened the computer. No it opens but gives the above error message. Do I need to change a setting of some kind?
Macbook Mac OS X (10.4.8)

Thanks for responding
Is this email account and SMTP server provided by your ISP used for connecting to the internet or an email account provider only that is not associated with your ISP?
This email account is associated with my ISP.
I have no other problems forward, sending or receiving mail on this account. The only problem remains when iCal sends an alarm and my computer is in"sleep" mode. Then the message stays in my Outbox and won't be delivered.

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Mail hangs when it receives a report that an e-mail could not be delivered.

Hi Guys :o),
One bug which is really bugging me is that every time I receive a bounced e-mail report, with a subject line containing words to the effect of:
"Undeliverable. Return to sender."
or:
"The message could not be delivered."
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So I junk the report, and then I delete it.
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Round and round I go, junk, delete, junk, delete, but the errant e-mail refuses to go away, and Mail continues to be unable to pull any new e-mails down from the POP server.
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Any workaround would be gratefully received.
With best wishes to everyone in the Apple community, especially those on the Infinity Loop.
In particular, I wish Mr Jobs a very speedy recovery.
Cool,
Michael T
London, England

Quit Mail, Right click on that Mail folder, choose archive, you'll get everything in the folder, and the folder itself in a file called Mail.zip, move it to a safe place, same for the Mail Downloads folder... only the plist is separate.
/Users/YourUserName/Library/Preferences/com.apple.mail.plist
Not certain, but this can fix myriad Mail problems...
Safe Boot from the HD, (holding Shift key down at bootup), it will try to repair your Disk Directory while the spinning radian is happening, so let it go, run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, then move these folder & file to the Desktop.
Move this Folder to the Desktop...
/Users/YourUserName/Library/Caches/Mail/
Move this file to the Desktop...
/Users/YourUserName/Library/Mail/Envelope Index
Reboot.
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/Users/YourUserName/Library/Mail/MessageRules.plist.backup

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HI,
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8:16 PM Friday; March 23, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.3)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
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see http://en.wikipedia.org/wiki/Backscatter_%28email%29
Wikipedia write much better than I do.

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Message was edited by: modular747

Message could not be delivered. Never happened with Entourage.

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