> 
> The only question that remains for me is, what is the difference between 
> PLAIN and LOGIN mechanisms? I understand from 
> http://wiki.dovecot.org/Authentication/Mechanisms that they are both plain 
> text. Unfortunately google searches for login authentication aren't 
> particularly helpful.

>The way the username and password are encoded and sent on the wire is slightly 
>different.  Biggest visible difference is PLAIN sends the username and 
>password together in the same command; LOGIN sends them separately.

>Some clients only support one of these methods. Broadly speaking, some 
>Microsoft clients only support LOGIN, some third-party clients only support 
>PLAIN.

>There's no reason to not offer both.


>  -- Noel Jones

Thanks Noel, as ever you've provided valuable insight. Your help is very much 
appreciated.

Kind regards,

James Day

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