Mail is not sending emails Fault says Authentification Required OUK102_402[402]

Mail is not sending emails, Receiving OK but when sending I am getting faukt report which says Authentification required OUK102_402[402]
Anyone able to help?

Mail (Yosemite): Verify an account’s outgoing mail server

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    Try going into Settings > Mail, Contacts, Calendars > select the account > account name , tap on SMTP (under the 'Outgoing Mail Server' heading) and then tap on your Primary Server and try entering your email account and password and see if you can then send emails

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    My problem is simply that Mail does not send email.
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    Does anybody have any suggestions how to fix this issue?
    The OS is 10.4.8, Mail Version 2.0.6 (749.2/752.3), all the suggested software updates done.
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    Reinstalling Mail is rarely necessary or appropriate to solve a problem. It certainly cannot fix anything that could be wrong within your home folder or at the server or with the network, and may even introduce new issues if not done properly. Moreover, in Mac OS X 10.4 you don’t need Pacifist to reinstall Mail, you could also do it as described in the following article:
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    3. Click Maintenance. In the Reset section, check LaunchServices database.
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    iOS: Unable to send or receive email
    http://support.apple.com/kb/TS3899http://support.apple.com/kb/TS3899
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    http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/
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    http://support.apple.com/kb/ht3228http://support.apple.com/kb/ht3228
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    http://support.apple.com/kb/ht1694http://support.apple.com/kb/ht1694
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    Server does not allow relaying email error, fix
    http://appletoolbox.com/2012/01/server-does-not-allow-relaying-email-error-fix/http://appletoolbox.com/2012/01/server-does-not-allow-relaying-email-error-fix/
    Why Does My iPad Say "Cannot Connect to Server"?
    http://www.ehow.co.uk/info_8693415_ipad-say-cannot-connect-server.htmlhttp://www.ehow.co.uk/info_8693415_ipad-say-cannot-connect-server.html
    How to Sync Contacts with Your iPad Using iTunes
    http://www.dummies.com/how-to/content/how-to-sync-contacts-with-your-ipad-using- itunes.htmlhttp://www.dummies.com/how-to/content/how-to-sync-contacts-with-your-ipad-using- itunes.html
    iOS: 'Mailbox Locked', account is in use on another device, or prompt to re-enter POP3 password
    http://support.apple.com/kb/ts2621http://support.apple.com/kb/ts2621
    iCloud: Create a group and add contacts to it
    http://support.apple.com/kb/PH2667http://support.apple.com/kb/PH2667
    eMail Groups - You can use a third party app that many users recommend.
    MailShot -  https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8
    Group Email  -  https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8
    iPad Mail
    http://www.apple.com/support/ipad/mail/http://www.apple.com/support/ipad/mail/
    Configuration problems with IMAP e-mail on iOS with a non-standard SSL port.
    http://colinrobbins.me/2013/02/09/configuration-problems-with-imap-e-mail-on-ios -with-a-non-standard-ssl-port/http://colinrobbins.me/2013/02/09/configuration-problems-with-imap-e-mail-on-ios -with-a-non-standard-ssl-port/
    Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
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     Cheers, Tom

  • On a new mail message in Yosemite there is no Send button or icon.  Only a grayed out word that says "send.  I can receive mail but not send because nothing at top of email allows sending

    On a new mail message in Yosemite there is no Send button or icon.  Only a grayed out word that says "send.  I can receive mail but not send because nothing at top of email allows sending.  Please help.  This is true of two .me accounts I have.

    Hi,
    It may pay to send a Screen Shot of the Connection Doctor info.  (see the Window Menu)
    It would seem the IMAP or POP side is logged in bit the out going STMP server is not.
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  • TS3276 My o2 email account does not work when sending from my MAC it will accept incoming mail but not send it gives me a message that  o2 account (offline) my mac I have no problem with my iPhone  or mac laptop. any suggestions please.

    My o2 email account does not work when sending from my MAC it will accept incoming mail but not send it gives me a message that  o2 account (offline) my mac I have no problem with my iPhone  or mac laptop. any suggestions please.

    Sorry for the delay...
    I did what you've told me, new account and manually copied my files from Time Machine. I had lots of permissions problems, but at the end, almost everything is in order... It seems it had to be with some of the Apple Preferences, but I can't be sure, as most of them were dumped to the trash can.
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    I've set up email on my iPad (talktalk.net) and can send and receive mails when connected to my home router and ISP. When connected to a router at another location with a different ISP I can receive mail but not send it. Is there any way round this?

    I've set up email on my iPad (talktalk.net) and can send and receive mails when connected to my home router and ISP. When connected to a router at another location with a different ISP I can receive mail but not send it. Is there any way round this?

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    When I set up my mail I could send emails now a day later I can not send them but can still receive them ... I can't see what is wrong .. Any answers .

    It's not a good idea to use a network disk for both Time Machine backups and other things.  By design Time Machine will eventually consume all the space on its output disk, which will then cause problem for your other files.  I'd store those other files on an external disk connected to the Time Capsule.  The problem with that is that Time Machine will only back up files that are local to your Mac.  That means that you'll only have one copy of the files on or attached to your Time Capsule.
    By the way, you've been misled by poor field labeling on this forum into typing a large part of your message into the field intended for the subject.  In the future just type a short summary of your post into that field and type the whole message into the field below that.

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