Hi Daniel,
Apologies for my late response, have been working all day until late this 
evening.
Yes, I would say you are definitely correct about the two protocols.  There was 
one comment on the net that said not to use them together as one would hit 
problems.  Rather than make any changes to these protocols at the moment, I 
will hang on until I get my new MacPro, whenever they become available and will 
probably have the two machines set up as POP.  I do appreciate you favouring 
the IMAP though and its advantages.

In regards to the Outgoing Mail Server, I now realise I should have gone into 
the Outgoing Mail Server box and edited the SMTP server list, as this is the 
only way I can get to the password etc.  A friend came around this evening and 
checked this. The password and other settings were where you said they should 
have been.  He did change the port number though, but later discovered it had 
reverted back to its original number.  However, it got me back on line with 
sending out emails.  Neither of us have any explanation for this.  I also 
called iinet as the server was saying I was over my quota - which is only 
1000mbs.  I was told the server was not functioning correctly which was why it 
would not release the deletions I had made.  It should be running okay 
tomorrow.  Who knows !

Many thanks for giving me a hand on this one.  I can say I have learnt a lot 
from this experience, mainly thanks to yourself and will keep your emails as a 
reference in case I need in the future (let’s hope not though)

Sincere thanks again

Jewels

> On 20 Nov 2019, at 1:00 AM, Daniel Kerr <wa...@macwizardry.com.au> wrote:
> 
> Hi Jewels
> 
> OK,..so part of your mail issue could be related to one computer using POP 
> and the other using IMAP. As they’re both different “protocols”. So if the 
> POP3 one is “downloading” or removing from the server,..then it will be 
> affecting the IMAP one. You really want them using the same protocol. - ie 
> both POP3 or both IMAP.
> It depends on how you want to use Mail really…..
> 
> In regards to the settings. Where you went to Outoing Mail Server and then 
> clicked Advanced tab. On the left of that, should be “Server Settings” tab.
> Click on that, and you want to make sure that both Username and password are 
> filled in.
> It should read.
> Username - jew...@iinet.net.au
> Password - your password
> Host Name - mail.iinet.net.au
> Authentication set to “Password” (or if using iinet as your ISP, you can set 
> this to None).
> 
> I generally have “Automatically manage connection Settings unticked” and the 
> allow insecure authentication also unticked.
> 
> Kind regards
> Daniel
> 
> ---
> Daniel Kerr
> MacWizardry
> 
> Phone: 0414 795 960
> Email: <daniel AT macwizardry.com.au>
> Web:   <http://www.macwizardry.com.au>
> 
> 
> **For everything Apple**
> 
> NOTE: Any information provided in this email may be my personal opinion and 
> as such should be taken accordingly, and may not be the views of MacWizardry. 
> Any information provided does not offer or warrant any form of warranty or 
> accept liability. It would be appreciated that if any information in this 
> email is to be disseminated, distributed or copied, that permission by the 
> author be requested. 
> 
>> On 20 Nov 2019, at 12:45 am, Julie Bedford <jew...@iinet.net.au> wrote:
>> 
>> Hi Daniel,
>> 
>> 
>> Thanks for the instructions.
>> 
>> Okay, Right hand side hit on the jew...@iinet.net.au address, now on the 
>> right hand side I have showing :
>> 
>> 
>> Account Type POP (on my networked iMac it is IMAP)
>> 
>> Then my alias
>> 
>> Email address:  jew...@iinet.net.au
>> 
>> Full name    Julie etc
>> 
>> Incoming Mail Server - mail.iinet.net.au (which is shadowed)
>> 
>> User Name: jew...@iinet.net.au
>> 
>> Password - filled in
>> 
>> Outgoing Mail Server (SMTP) - mail.iinet.net.au
>> 
>> TLS Certificate - ‘None’
>> 
>> 
>> Under “Advanced” tab
>> 
>> I have the Port showing and underneath that -
>> 
>> Authentication - Password
>> 
>> Then a box unticked “allow insecure authentication”
>> 
>> 
>> Hope this make sense
>> 
>> 
>> Jewels
>> 
>> 
>>> On 20 Nov 2019, at 12:27 am, Daniel Kerr <wa...@macwizardry.com.au> wrote:
>>> 
>>> Hi Julie
>>> 
>>> Most emails sent if you’re on the same server shouldn’t need authentication 
>>> (ie if you’re sending iinet emails on the iinet server). However, if you’re 
>>> sending emails on a different network connection (or travel on different 
>>> wireless connections that use different internet/ISPs) then authentication 
>>> is needed (eg using iinet email but say on a Telstra or Optus network).
>>> This setting can be found in - 
>>> 
>>> Mail = Preferences - Accounts - click on email account on left hand side. 
>>> On right hand side, go to Server Settings.
>>> Look under Outgoing Mail Server (SMTP). You’ll see “Host Name”, which is a 
>>> drown menu (if you have set ti automatically manage connection settings 
>>> this can be slightly different).
>>> Go to Edit SMTP Server List (or you’ll want the follow details near where 
>>> it says “host name”.)
>>> Under Server Settings, you may have Authentication set to “Password”. Above 
>>> this, you want the full iinet email address and the email password).
>>> Or if you using iinet email on the iinet internet, you can change 
>>> Authentication to “None”.
>>> Then click OK.
>>> 
>>> That should get it working for you.
>>> Kind regards
>>> Daniel
>>> ---
>>> Daniel Kerr
>>> MacWizardry
>>> 
>>> Phone: 0414 795 960
>>> Email: <daniel AT macwizardry.com.au>
>>> Web:   <http://www.macwizardry.com.au>
>>> 
>>> 
>>> **For everything Apple**
>>> 
>>> NOTE: Any information provided in this email may be my personal opinion and 
>>> as such should be taken accordingly, and may not be the views of 
>>> MacWizardry. Any information provided does not offer or warrant any form of 
>>> warranty or accept liability. It would be appreciated that if any 
>>> information in this email is to be disseminated, distributed or copied, 
>>> that permission by the author be requested. 
>>> 
>>>> On 19 Nov 2019, at 11:57 pm, Julie Bedford <jew...@iinet.net.au> wrote:
>>>> 
>>>> 
>>>> Hi
>>>> 
>>>> I’ve been trying to clean up my mail on my MacPro (Elcapitan) and now find 
>>>> I can’t send emails.
>>>> The message I get is “:  Cannot Send Message Using the server 
>>>> mail.iinet.net.au” The server response was
>>>> ‘authentication required’
>>>> Any suggestions ?
>>>> 
>>>> Thanks
>>>> Jewels
>>>> 
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