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If your email messages are not being sent, it is likely that someone has configured their account to use TCP port 25 and is using an internet connection different from the one provided by the email account provider.
Possible Reasons for Not Being Able to Send an Email
There could be several reasons why you are unable to send an email:
- The recipient’s mailbox may have reached its maximum capacity and is automatically rejecting new messages.
- The email may be considered as spam.
- Additional authentication or an active rejection filter may be required.
Using Outgoing Mail Considering These Issues
To use the outgoing mail in consideration of these issues, follow these steps:
- Click on "SEND/RECEIVE" and choose "Offline" to send an email from the outgoing mail.
- Then, click on "Outgoing Mail" in the navigation pane.
Accessing Outlook’s Outgoing Mail
To access Outlook’s outgoing mail, follow these steps:
- Close Outlook, as it may remain stuck while sending messages.
- Restart Outlook, which should now start in Offline mode.
- After deleting the problematic message, restart in online mode.
Sending an Email from a Mobile Device
To send an email from your mobile device, simply follow these steps:
- Click on "Compose Message" or "Write" depending on the app used to send an email.
- If you click on the paperclip icon in the top bar of your smartphone, you can write or attach one or more files, such as a photo, video, or document.
Delayed Messages
If your message is delayed, it is because Gmail cannot immediately send outgoing mail due to a queue. However, it will be queued and attempted to be sent later.
Adding Additional Outgoing Mail Servers to an iPhone
To add additional outgoing mail servers to your iPhone, follow these steps:
- Search for "Mail" in your iPhone/iPad settings.
- Enter your account "[email protected]" in the Account section.
- Then, choose SMTP as the outgoing mail server.
- Enter your outgoing mail server data in the "Primary Server" field.
Outlook Not Sending Mail
If you see the message "Disconnected," "Offline," or "Attempting to Connect," it means that Outlook is unable to connect to the mail server to send messages. To switch between offline and online mode, choose Send/Receive and Preferences, and Work Offline.
Outlook Not Allowing Email Sending
To troubleshoot Outlook not allowing email sending, follow these steps:
- Disable antivirus protection, restart the software, and try to send email messages from the outgoing mail with a simple test.
- Configure an antivirus or firewall to prevent scanning of outgoing email messages if they are being sent.
Restarting Outlook
To restart Outlook, follow these steps:
- Go to "Tools" in Microsoft Outlook and scroll down to "Customize."
- In the dialog box, go to the "Toolbars" tab.
- Choose the toolbar box you want to restore to the original settings and click on "Restore."