MacBook Pro stopped sending email messages.

Question

MacBook Pro stopped sending email messages.

Hi there,

As the title says, suddenly, yesterday my Email App on my Macbook Pro stopped sending my email messages. My mail app is showing an error: "Sending the message content to the server failed" I have 3 mailboxes and this error is occurring on all the emails i send from them. I checked the POP and SMTP and everything is fine. I installed Airmail and still get errors sending mail. Is it a problem with the mac? Or any configuration I might accidentally changed? I really need this for my job, can someone help me? Thanks in advance.

Pedro

MacBook Pro (Retina, 13-inch, Late 2013), OS X Yosemite (10.10.5)

Posted on Mar 15, 2017 6:13 AM

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Answer 1

Eric Root

Level 10

685,275 points

Mar 15, 2017 11:23 AM in response to Pedro Hewzzie

I don't see anything installed that should be a problem.

Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.

Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.

Isolating an issue by using another user account

If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer or by using the developer’s uninstall instructions. For each disable/delete, you will need to restart if you don't do them all at once.

Safe Mode - About

Safe Mode - Yosemite

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Answer 2

Mar 15, 2017 6:30 AM in response to hercules-king

Hi,

Thanks for the prompt answer. When I run the connection doctor, I get green lights for the servers I am currently using in my mail accounts. I get some red, but those are connections that I don't use and they have always been there, even when I was able to send mail. I don't know if I made myself clear: I still receive mail in all my mailboxes, I just can't send it.

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Answer 3

Mar 15, 2017 6:55 AM in response to hercules-king

I use 2 mail accounts that are connected to live and outlook and another connected to the Bar Association servers.

The strange thing is that Airmail, a different mail reader doesn't allow me to send mails either.

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Answer 4

Mar 15, 2017 6:59 AM in response to Pedro Hewzzie

Try this

Go to mail app> click mail into menu bar

>click preferences

> click accounts

>click the live account

> make sure enable account is green

>also on the top you will see server settings, click it

>does it show an outgoing mail box that says "offline"?

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Answer 5

Eric Root

Level 10

685,275 points

Mar 15, 2017 10:52 AM in response to Pedro Hewzzie

Try running this program in your normal account, then copy and paste the output in a reply. The program was created by etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read. On the screen with Options, please open Options and check the bottom 2 boxes before running. Click “Share Report” button in the toolbar, select “Copy Report” and then paste into a reply. This will show what is running on your computer. No personal information is shown.

Etrecheck – System Information

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Answer 6

Mar 15, 2017 11:10 AM in response to Eric Root

EtreCheck version: 3.1.5 (343)

Report generated 2017-03-15 18:08:07

Download EtreCheck from https://etrecheck.com

Runtime 1:49

Performance: Excellent

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Problem: Other problem

Description:

Mail client is not sending mails

Hardware Information: ⓘ

MacBook Pro (Retina, 13-inch, Late 2013)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Pro - model: MacBookPro11,1

1 2.4 GHz Intel Core i5 (i5-4258U) CPU: 2-core

8 GB RAM Not upgradeable

BANK 0/DIMM0

4 GB DDR3 1600 MHz ok

BANK 1/DIMM0

4 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en0: 802.11 a/b/g/n/ac

Battery: Health = Normal - Cycle count = 283

Video Information: ⓘ

Intel Iris

Color LCD 2560 x 1600

System Software: ⓘ

OS X Yosemite 10.10.5 (14F2109) - Time since boot: about 5 hours

Disk Information: ⓘ

APPLE SSD SD0128F disk0 : (121,33 GB) (Solid State - TRIM: Yes)

[Show SMART report]

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / [Startup]: 120.11 GB (23.75 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 120.47 GB Online

USB Information: ⓘ

Apple Internal Memory Card Reader

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Thunderbolt Information: ⓘ

Apple Inc. thunderbolt_bus

Gatekeeper: ⓘ

Mac App Store and identified developers

System Launch Agents: ⓘ

[not loaded] 5 Apple tasks

[loaded] 144 Apple tasks

[running] 63 Apple tasks

System Launch Daemons: ⓘ

[not loaded] 47 Apple tasks

[loaded] 136 Apple tasks

[running] 79 Apple tasks

Launch Agents: ⓘ

[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a 23d420d.plist (2017-02-08) [Support]

[loaded] com.oracle.java.Java-Updater.plist (2017-02-02) [Support]

Launch Daemons: ⓘ

[loaded] com.adobe.ARMDC.Communicator.plist (2017-02-08) [Support]

[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2017-02-08) [Support]

[loaded] com.adobe.fpsaud.plist (2017-02-28) [Support]

[loaded] com.microsoft.autoupdate.helper.plist (2017-03-07) [Support]

[loaded] com.microsoft.office.licensing.helper.plist (2015-01-16) [Support]

[loaded] com.oracle.java.Helper-Tool.plist (2016-12-13) [Support]

User Launch Agents: ⓘ

[loaded] com.dropbox.DropboxMacUpdate.agent.plist (2017-03-10) [Support]

[loaded] com.google.keystone.agent.plist (2017-01-14) [Support]

[running] com.spotify.webhelper.plist (2017-03-15) [Support]

[running] org.xbmc.helper.plist (2017-03-12) [Support]

User Login Items: ⓘ

Remote Mouse Application

(~/Downloads/Remote Mouse.app)

iTunesHelper Application (2017-01-24)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Dropbox Application

(/Applications/Dropbox.app)

Spotify Application Hidden

(/Applications/Spotify.app)

Android File Transfer Agent Application

(~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

Photo Stream URL SMLoginItem (2015-03-22)

(/Applications/iPhoto.app/Contents/Library/LoginItems/PhotoStreamAgent.app)

Internet Plug-ins: ⓘ

FlashPlayer-10.6: 25.0.0.127 - SDK 10.9 (2017-03-14) [Support]

QuickTime Plugin: 7.7.3 (2017-03-14)

AdobePDFViewerNPAPI: 15.023.20056 - SDK 10.11 (2017-03-02) [Support]

AdobePDFViewer: 15.023.20056 - SDK 10.11 (2017-03-02) [Support]

Flash Player: 25.0.0.127 - SDK 10.9 (2017-03-14) [Support]

Default Browser: 600 - SDK 10.10 (2016-02-04)

SharePointBrowserPlugin: 14.7.2 - SDK 10.6 (2017-03-15) [Support]

Silverlight: 5.1.41212.0 - SDK 10.6 (2016-02-24) [Support]

javaappletplugin: Java 8 Update 121 build 13 (2014-07-01) [Support]

JavaAppletPlugin: Java 8 Update 121 build 13 (2017-02-02) Check version

3rd Party Preference Panes: ⓘ

Flash Player (2017-02-28) [Support]

Java (2017-02-02) [Support]

Time Machine: ⓘ

Time Machine not configured!

Top Processes by CPU: ⓘ

5% WindowServer

4% coreaudiod

3% kernel_task

2% Google Chrome

2% fontd

Top Processes by Memory: ⓘ

725 MB kernel_task

672 MB plugin-container

475 MB Google Chrome Helper(7)

418 MB firefox

279 MB Finder

Virtual Memory Information: ⓘ

2.27 GB Available RAM

43 MB Free RAM

5.73 GB Used RAM

2.23 GB Cached files

0 B Swap Used

Diagnostics Information: ⓘ

Mar 15, 2017, 12:52:18 PM /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2017-03-15-125218 _[redacted].crash

/System/Library/PrivateFrameworks/AmbientDisplay.framework/Versions/A/XPCServic es/com.apple.AmbientDisplayAgent.xpc/Contents/MacOS/com.apple.AmbientDisplayAgen t

Mar 15, 2017, 12:52:00 PM Self test - passed

Mar 15, 2017, 11:51:13 AM /Library/Logs/DiagnosticReports/Airmail 3_2017-03-15-115113_[redacted].cpu_resource.diag [Details]

/Applications/Airmail 3.app/Contents/MacOS/Airmail 3

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Answer 7

Mar 15, 2017 6:15 AM in response to Pedro Hewzzie

Hi

Open the mail app
On the top menu bar on the right of the apple logo find "mailbox"
Click connection doctor >run

tell us the results

Hercules

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Answer 8

Mar 15, 2017 6:42 AM in response to Pedro Hewzzie

It sounds like an outgoing mail server issue

but for it to happen to multiple accounts is strange, what are their domains (e.g.. gmail, yahoo)

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Answer 9

Mar 15, 2017 8:20 AM in response to hercules-king

account is enabled and no account is offline. What really puzzles me is that I didn't change anything for it so stop sending emails... It just stopped...

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Answer 10

Mar 16, 2017 4:30 AM in response to Eric Root

Hey,

I don't know if this helps, but I can now send emails through gmail using imap. And I am using POP for the other 3 email accounts that i can't send emails from.

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Answer 11

Eric Root

Level 10

685,275 points

Mar 16, 2017 11:32 AM in response to Pedro Hewzzie

For the accounts that don't work, try going to the e-mail provider's website and see if you can send from there.

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