It's important before you start to consider how you want your mail, it's much like a pizza, plenty of options!
If you want to download your mail and delete it off the server every time you check mail (the most common and privacy conscious method), then use POP3.
If you want to keep your mail on our servers, then you should use IMAP, and not POP3 with "leave on server" option. The use of IMAP does however mean you have to be aware of, and pay particular attention to, your mail quota limit. We'll warn you once you reach 50% and 75% quota usages, and again as your mailbox reaches capacity.
It's not a good idea to mix protocols, choose either POP3, or IMAP, and stick to it. If you don't create or use other folders to store mail outside of your Inbox then it wont affect mail accessibility, since both access the same Inbox, however IMAP allows you to create filters and sub folders to store mail, which POP3 by its very design can not access, resulting in losing access to those messages unless you log back in with IMAP, or Webmail.
In either case, it is advisable to enable encryption for both receiving and sending Emails, the modern, and preferred method is to use TLS, or STARTTLS. STARTTLS connects as normal but then upgrades to encrypted before sending your details, (hence the name: START TLS) this uses the same default server ports (POP3:110 / IMAP:143 / Mail Submission SMTP:587) and is supported in all modern clients and apps and is the most popular method. TLS however uses encryption from initial connection, because of this it requires different ports (IMAPs:993, POP3s:995 and SMTPs:465), there is no other difference between it and STARTTLS, the later perhaps being more widely supported.
We do not accept outgoing (relaying) mail for remote users on port 25, you must use either the message submission port 587, or SMTPs port 465.
Please double check these settings before reporting problems, especially if you are getting relaying denied errors.
It is also important to note that when using IMAP, our system regards several folders as special, including Spam, Junk, and Trash. We automatically delete all contents of the Trash folder after 28 days, Junk folder after 7 days, and Spam folder when its processed overnight.
Some remote IMAP clients, in particular mobile devices, like to use their own methods and create other folders like Deleted Messages, this folder is not a special folder name on our systems, therefor it is not checked for messages to expire, meaning you need to manually delete your trash contents in any Deleted Messages type folder, also note that the contents of that non standard trash folder also count towards your quota.
When Evolution launches for the first time, the Setup Assistant will start. Click Forward to continue. On the Identity tab, enter the required information in each of the appropriate fields. The Organization field is not mandatory. Click Forward when you're ready to continue. This example will assume that you have a POP mail server. Enter mail.ausics.net in the "incoming" mail server name in the Server section, Enter your email address in the Username section. Under Security, set TLS (you may use SSL) Change Authentication type to PLAIN Check the "Remember password" box. ...click Forward Place a check in the Automatically check for mail every X minutes box (5 or so minutes is a good value) ...click Forward On the Sending Email page, select Server Type: SMTP Set the Server to mail.ausics.net:587 Set Security to TLS Set Authentication Type to PLAIN Check the "Remember password" box. ...click Forward. And now give this email account a Name you can easily identify with and click Forward If prompted to choose your Time Zone, do so, click Forward, then Apply Contratulations! You're almost done, all that's left now is to login to mail, you'll then be prompted for your password and can proceed to reading and sending mail. * NOTE: Don't be confused about thinknig PLAIN is sending clear-text user/password When using TLS, it is very safe to use Auth Type PLAIN, because your credentials are sent over the encrypted channel. LOGIN: Is an old form of PLAIN, used by Microsoft clients that use SSL.