Mail 4.0 won't send

I can't get Apple Mail to send mail. Connection doctor says it's connecting. I'm using an iMac 10.6.8 Intel with apple mail 4.0, connected to AT&T DSL. I've tried all the troubleshooting tips listed here.

Mail finally "sending"!
After endless checking of SMTP settings etc, all to no avail, I followed this suggested solution - it worked.
(regrettably I didn't note the subscriber's name - but a tip of the hat to him/her).
To test SMTP connection: (in my case it's Rogers on port 587)
Go to Terminal and type: telnet smtp.broadband.rogers.com 587
The reply to this was "permission denied"
Tried 98.139.221.125
Tried 67.195.22.104
"Unable to contact host"
I'm running Intego's Net Barrier and sure enough both these addresses were shown as "blocked". Unblocking solved the problem.
Don't know if this will help anyone else but thought I should pass it on, just in case.

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Mail 6.2 won't send my mail???

I think mail just up graded and now it won't send my mail. What is wrong? What can I do. I have check my password and reentered it but it doesn't work.

I've got the identical problem! Can't send but can receive new incoming mail.
When I first installed OS 10.6 several months ago Send worked just fine but after several more months send function stopped working.
I had the same problem with Mail app in OS10.5.8.....after many months of working without issue it eventually stopped. Receive also eventually stopped working in Leopard.
Just as in OS 10.5.8., in 10.6.8 I keep getting the notification that my email password is not accepted as valid.
Was valid and accepted earlier but no longer.
The consensus seems to be that Mail app is not totally reliable.

Mail receives but won't send. Upgrade to Lion hasn't helped

Mail can send messages but is not receiving any.

Hi, once you have all the correct outgoing server and incoming server settings check your router.
I had the same issue and tried many times to change the settings in mail and still couldn't send.
View the router settings and check the devices, if your Macbook is listed as Unknown xx-xx-xx change its name to a single word e.g Macbook.
Go back to mail if it still doesn't work remove the account and add back.
This worked first time for me

I can no longer use my mail account. Won't send or receive.

How do I reset my mail account in order to receive and send messages?

Apple - Support - iPad - Mail Assistant
iOS: Unable to send or receive email
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Mail receives but won't send.

Need some help, mail will receive but not send, keep getting a message that cannot send using server. Sometimes works, now not at all, thanks!

You can check outages planned, present or past...
http://www.aroundhawaii.com/support/cable_status/
http://www.aroundhawaii.com/support/cable_status/#Planned
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Mail 3.3 won't send attachments

Ever since upgrading to Leopard 10.5.4 I haven't been able to send attachments over about 30Kb. I have dialup with NetZero and have checked all of the modem and Network settings. I've been using this same dialup for 5 yrs or so and have never had a problem with previous OS's. The last was 10.4.11. When I attempt to send an attachment of over 30Kb, Mail will spin for 5 min. or so and finally generate the following: "Cannot send message using the server smtp.netzero.com". I checked with NetZero and that is the correct address for their outgoing mail server.To check that I didn't have some other problem I tried FTPing a file via an FTP client and that worked fine.
I did try sending an attachment using the browser based email program from NetZero and had a similar problem...I'm using Safari 3.1.2 for that BTW. In NetZero it spun it's wheel for a few minutes and simply didn't load the attachment. This leads me to think that this is more of an OS issue in that it does the same thing with 2 different programs.
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I'm having similar trouble with Mail 3.3 after upgrading to Leopard despite years of trouble-free use with exactly the same set up on previous OSs and versions of Mail.
It boils down to frequent but erratic SMPT errors - sometimes the mail goes, sometimes it doesn't. I've found that clicking the Connection Doctor button sometimes helps. But sometimes it doesn't.
Sometimes it's only emails with attachments that get snagged, other times it's all emails.
Why does something that used to work fine have to get worse with an upgraded version? iPhoto seems to have got worse too (no dragging to folders from full-screen view). Come on, Apple, sort it out or we'll all have to abandon your Apps.

Mail 5.3 won't send iCloud email. Stuck in Outbox.

I'm having issues with the Mail app not sending emails. I can receive them just fine. I am also receiving an error when attempting to save changes in Mail's preferences for my iCloud account. I've searched all over the web for fixes and have tried most of them, but nothing seems to fix the issue. Any ideas!?
Here is the error I keep receiving:

My IMAP Gmail stopped working Jan 22 2013. Gmail POP and other email accounts worked.I have Lion on a 2012 Macbook Pro.
In the end, after trying many websites, I just clicked the tilde (~) next to the Gmail Imap account and it downloaded two weeks worth of mail. It took a few minutes with the grey spinning wheel but finally came through.

Mail - incoming OK, won't send. Only on laptop. iPhone OK.

I have a MacBook Pro and an iPhone 4s.
I have an iCloud account. I use Mail on the laptop and iPhone 4s.
On my MacBook Pro, mail is coming in. But it will not go out. When I try to send, I get the following message:
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I am given the choice of choosing a different server (iCloud or smtp.mac.com). Same result.
When I go to Mail preferences, and click on accounts, I note the following:
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- I have confirmed my password.
Meanwhile, I can send mail from my iPhone just fine.
Finally, I can log into iCloud and send from there.
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More info.
I now have several messages on my laptop in the Outbox folder. That is where they go when I attempt to send them. Online, at iCloud, there is no outbox folder.
When I attempt to send a message from my laptop, I still get the message "Cannot send using the server smtp.me.com. The sender address was rejected by the server." I am given the choice edit, try later or try with selected server. If I choose edit, the draft message will appear online in my iCloud draft folder.
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Yosemite mail 8.0 won't send stationery with Word attachment

Before upgrading to Yosemite. I could send stationery-based email with a Word file attachment. Now when I followed the same process as I have done every week fro the past 5 months with my team meeting agenda, if get an error "This message cannot be sent because it uses stationery and contains attachments that are not images."
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As a first step, try the following.
Quit Mail first and using the Finder, go to Home > Library > Mail > Mailboxes > Outbox.mbox.
Delete the Outbox.mbox folder and empty the Trash.
This will delete all messages not sent that remain in the Outbox mailbox so if you want to save these messages, transfer them to the account's Drafts mailbox before quitting Mail and delete the Outbox.mbox folder using the Finder.
Launch Mail and a new Outbox.mbox folder will be created automatically by Mail within the Mailboxes folder.
Test if this resolves the problem.

Mail fail - smtp won't send, connection doctor says fine.

Hi Guys,
I've been searching around t'interweb and I can't see to find a fix for this. Mac mail has always been really solid for me, but in the past couple of months mine has gone wonky. First it stopped searching, which again despite trying various things I found and re-installing the whole system, I could not fix.
Now, and more disastrously it has stopped allowing me to send emails through the SMTP server.
It throws up a dialog box saying could not send through this server, try another.
I contacted my exchange mail provider, have gone through settings, and they all seem fine. They've tested it all from their end too. They even issued me an alternate SMTP server and that doesn't work either. Argh. When I run connection doctor it can log in fine. But when I send mail it gets stuck.
Any thoughts its seriously messing up my day/evening/life at the moment.
Help much appreciated.

The typical problem when the SMTP requires no separate authentication, is that it must use Port 25, but more and more connection providers are blocking Port 25, as it is the least secure again misuse. For those venues where Port 25 use is still permitted, you often must be approved to use it by the IP address of the modem. You have said this problem is present when you are at more than one venue and mention the use of a dongle. Has the modem at any venue changed, and might some ISPs involved have recently acted to block Port 25?
You should investigate whether your Exchange provider can offer you a fully authenticated SMTP that will allow you to use either Port 587 or Port 465.
Ernie

Mail Program Fried - won't Send

I recently upgraded from 10.3 to 10.4. All was working fine until today. I experienced sporadic delays when inputting text. Then, the SEND button stopped working. Nothing happens when I press the SEND button or if I choose SEND from the menu. I have tried reinstalling MAIL from my install disk. THe problem did not go away. HELP!!

Well, I tried that and all connections were successful.
However, I just tried something else. I had an online Exchange account that I have been using, but recently deactivated the account, and moved the mail servers to my own domain. I had left the Exchange server account active to give the system and accounts time to migrate and sync, etc. On a whim, after your above email, I deleted the inactive Exchange account and that seems to have fixed it. I don't know why, though, because all email accounts were set to use mobile SMPT2GO for all outgoing mail, and that account was turned off on the server side.
For anyone else having this problem, I also tried the various fixes in the thread here. There are some good ideas, though they didn't work for me.

Mail in outbox won't send

i get error box when trying to send email from a hotel internet connection. Works fine when i'm at home. Error number is 17897

The hotel connection is probably unsecured.
A popular search engine provided these links searching for "Mac Mail Error 17897" that might help:
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http://www.office.mvps.org/faq_topic/travel.html

Imac mail receives, but won't send

I can receive from my acounts, but none will send.
When I use the exact same settings in Entourage it works fine...but imail should work, no?

Perhaps you need to recheck your settings to make sure they're configured correctly. This site show the proceedure quite clearly (with screen pics) http://www.cit.cornell.edu/helpdesk/mac/email/osxmailapp.html

Apple mail receives, but won't send

This is my last resort. I've double-checked with my provider and all is ok on their end. I have deleted settings and set them up as per their recommendations several times to no avail. I can receive emails, but will not send and consistently get warnings about various things such as the password is invalid, there's an invalid certificate or just that it can't connect. The strange thing is, it all works fine on both my iPad and iPhone.
I've tried several searches on the community forum and noticed several problems that were similar. I hope someone has an answer that relates to this problem in regard to Yosemite.
Thanks (fingers crossed).

This is my last resort. I've double-checked with my provider and all is ok on their end. I have deleted settings and set them up as per their recommendations several times to no avail. I can receive emails, but will not send and consistently get warnings about various things such as the password is invalid, there's an invalid certificate or just that it can't connect. The strange thing is, it all works fine on both my iPad and iPhone.
I've tried several searches on the community forum and noticed several problems that were similar. I hope someone has an answer that relates to this problem in regard to Yosemite.
Thanks (fingers crossed).

Mail receives but won't send. Why?

Error message says something to do with outgoing mail server (SMTP) having a problem or being incorrect. I have made no changes to settings nor have I upgraded or changed my Apple Mail.
Does this have anything to do with the discontinuation of MobileMe? My email address I'm using is [email protected] .
This problem was intermittent, but now it seems to be steady and continuous.

Hello Earnie, I believe it is MobileMe being discontinued.
Do not delete the old account yet. sign up for an iCloud account if you haven't.
I understand .mac mail will still come through. Do not delete the old account yet.
You cannot use .mac or MobileMe as type of Account, you have to choose IMAP when setting up, otherwise Mail is hard coded to change imap.mail.me.com to mail.me.com & smtp.mail.me.com to smtp.me.com, no matter what you try to enter.
iCloud Mail setup, do not choose .mac or MobileMe as type, but choose IMAP...
On second step where it asks "Description", it has to be a unique name, but you can still use your email address.
IMAP (Incoming Mail Server) information:
          •          Server name: imap.mail.me.com
          •          SSL Required: Yes
          •          Port: 993
          •          Username: [email protected] (use your @me.com address from your iCloud account)
          •          Password: Your iCloud password
SMTP (outgoing mail server) information:
          •          Server name: smtp.mail.me.com
          •          SSL Required: Yes
          •          Port: 587
          •          SMTP Authentication Required: Yes
          •          Username: [email protected] (use your @me.com address from your iCloud account)
          •          Password: Your iCloud password
Also, you must upgrade your password to meet the new criteria: 8 characters, including upper and lower case and numbers. If you have an older password that does not meet these criteria, when you try to setup mail on your mac, using all of the IMAP criteria listed above, it will still give a server error message. Go to   http://appleid.apple.com         then follow directions to change your password, then go back to setting up your mail using the IMAP instructions above.
Thanks to dpepper...
https://discussions.apple.com/thread/3867171?tstart=0

Mail 4.0 won't send

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