Enable TLS on smtp.aa.net.uk

This article as about enabling TLS in your email program when sending email through the AAISP email servers (smtp.aa.net.uk)

Why do this?

Firstly, it is good to understand what TLS is and why enabling TLS is good.

TLS stands for Transport Layer Security - it is similar to https web pages in that the data sent between your email program is sent securely.

You can read more about TLS on the Wikipedia page

Certificate Warnings

You should not get a certificate warning when using our outgoing mail server, if you do then please check that the smtp server is set to: smtp.aa.net.uk

How to Enable TLS

Different email clients have different ways to enable TLS, usually it is just a tick box in the email account settings. Here are some pointers:

AAISP Webmail

The AAISP webmail will send email via TLS already.

Thunderbird & Icedove

Edit -> Account Settings -> Outgoing Server (SMTP) -> Edit -> Set "Connection security: STARTTLS"

or

Tools -> Account Settings -> Outgoing Server (SMTP) -> Edit -> Set "Connection security: STARTTLS"

Windows Live Mail

Accounts -> select your account -> Properties -> Advanced -> Under Outgoing mail (SMTP) Tick "This server requires a a secure connection"

Outlook (newer eg 2010)

File -> Info -> Accounts Settings -> Select your account -> Change -> More Settings -> Advanced -> Set "Use the following type of encrypted connection: TLS"

Outlook (older, eg 2003)

Tools -> Account Settings... -> Change -> More Settings -> Advanced -> Set "Use the following type of encrypted connection: TLS""

iPhone Default email app

Settings -> Mail, Contact, Calendars -> Choose your email account -> Advanced -> SMTP -> Set "Use SSL: ON"

K9 (Android)

Select the email account -> Settings -> Account Settings -> Sending mail -> Outgoing Server -> Set "Security: STARTTLS"