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Index
1. The Club 2. Logging in / the account 3. WWW 4. E-mail 5. FTP 6. Misc
1. The Club

1.1 Is ACC the same thing as TSDF?

ACC stands for Academic Computer Club - Umeå University and is the new name of TSDF, established after leaving Teknolog Sektionen (TS)

1.2 Where can I find the ACC staff when I have problems?

Look at our support-page.

1.3 Can anyone become an ACC member?

No, only students and staff at the University of Umeå can become members of ACC. The term student is defined as a person registered at a course.

1.4 What does an ACC membership cost?

The present membership fee is 50 swedish crowns per semester. The amount is established on the annual meeting.

1.5 How do I pay the membership fee?

Use our BankGiro 5149-5331 to pay the membership fee.
Remember to use the right OCR-reference when paying. To retrive the correct OCR reference, please visit the information page regarding payment. Note that we don't accept payments which lasts over the summer, ie. on the autumn period you can pay for the whole year and during the spring period you can only pay for the current period (up to the summer).

2. Logging in / the account

2.1 How do I log in from home?

Use an SSH client, see the login page for more information.

2.2 How do I change my password?

To change your password, login on our computers with SSH and then use the command passwd and follow the instructions on screen.

2.3 HELP! I have forgotten my password!

Come visit us on our support.

2.4 Can I get back deleted files?

There is unfortunately no equivalent of the MSDOS Undelete command under UNIX. We do however take backups each night, so if the information lost is of really important nature then contact support@acc.umu.se as soon as possible so we can try to restore the file for you.

2.5 What computers can I log into?

You can always log into login.acc.umu.se, this will connect you to one of our servers that are online.
Due to how the key handling works in SSH, this is not optimal. See the login page for more information.

2.6 From what computers can I log into ACC?

You can log into the ACC system from just about any computer connected to the Internet. In order to do this you must have an SSH client.

För mer information se http://www.acc.umu.se/help/newbie/login.html.en.

2.7 Group accounts

See http://www.acc.umu.se/help/newbie/gruppkonton.html (only in Swedish).

2.8 How do I get access to the computerlabs?

Visit us on our support to fill out an application.

3. WWW

3.1 Being a member, do I get to have my own homepage?

Sure, you can place your own homepage on ACC. The address will be http://www.acc.umu.se/~username/

For more information, see http://www.acc.umu.se/help/web/index.html.en.

3.2 How much space do I have for my homepage?

You can store up to 16 Gigabytes on your ACC user account. This means that if you keep nothing else except your homepages there, then can store 4 Gigabytes worth of homepages.

3.3 Can I use Microsoft Frontpage to create and upload my homepage?

Yes and No!
You can ofcourse use Frontpage to create your pages. We cannot however let you use Frontpage to upload the pages to the server (it uses its own protocol). Use SFTP/SCP for this purpose instead.

3.4 Are there any HTML-editors on ACC's computers?

The are unfortunately no HTML editors on our computers. Use a regular editor instead (i.e vi or pico).

3.5 Why do I get the error message: "Forbidden. You don't have permission to access..." when accessing my HTML-files?

You must set the correct access rights on your HTML files.
Use chmod 755 on directories and cgi-scripts, also chmod 644 on regular files. If you don't feel comfortable using chmod, then type fixchmod, this will take care of the access rights of your web pages for you.

3.6 Can I put up a homepage for my club (i.e sports association) on my ACC account, even though it isn't connected to UmU?

No! It is not allowed to keep sites for external organizations (this according to rules set by SUNET).

3.7 Why doesn't my homepage show up in the member-register ?

The page is updated once every day, so you've got to have some patience.

If you have waited for more than one day and your homepage isn't listed, make sure you have named your main-page index.html and nothing else.

3.8 Why doesn't CGI/SSI work on my page ?

If the www-server lets the CGI-call pass unmodified (ie. you can read text like <!--#exec cgi="script.cgi" --> when the page is loaded in a browser), then the page is probably named incorrectly.

HTML-files must have the extension .html (small caps) to enable the www-server to parse them correctly. If you make your pages in a DOS/Windows environment it is common that they are named .HTM or something else.

4. E-mail

4.1 Can I read my mail from my PC/Mac at home?

Sure, no problem. You need an Internet connection and a mail program that supports IMAP or the older POP protocol. Thunderbird is a pretty decent (and free) software for Windows/Linux/Mac. Mac users can also use the built-in Mail application.

4.2 What is IMAP, and what settings shall I use ?

The IMAP-protocol differs from POP in that it is designed for leaving your mail on the server.
If you want to use IMAP instead of POP (you can't use both at the same time) then use the following settings:
IMAP-account/username: Your ACC username
IMAP-server (Incoming mail): mail.acc.umu.se
SMTP-server (Outgoing mail): mail.acc.umu.se (if you are located outside .umu.se, read more below).
Mail path, mail directory (name differs): mail (An empty value will cause mailbox listings to take a horrible amount of time!)
You need to enable SSL in the IMAP settings, so your login information is encrypted.

4.3 What configuration parameters for POP/SMTP should I set in my mailreader?

The configuration should be as follows:
POP-account/username: Your ACC username
POP-server (Incoming mail): mail.acc.umu.se
SMTP-server (Outbound mail): mail.acc.umu.se (if you are located outside .umu.se, read more below).
If the program your are using supports POP3 over SSL (Secure Sockets Layer), you should enable it for better security. Outlook Express among others supports it.

4.4 What parameters for POP/SMTP should I set when I'm located outside .umu.se ?

ACC:s mailserver does not allow everyone on the internet to use it to prevent the distribution of SPAM. It's blocked so you can only use it if you're located inside .umu.se or if you have shown that you are "trusted". The latter can be done by logging in to the IMAP/POP server, that is noted and the IP address you logged in from will be accepted for a while.

Symptoms on connecting from a machine not allowed to relay through ACC:s mailserver is that you cannot send mail to external (ie. non-ACC) addresses, and that you get an error-message containing the text Relaying denied.

If you are affected by this you must either change SMTP-server (Outbound mail) to the SMTP-server provided by your ISP or change to mail.acc.umu.se port 587 and log in via IMAP/POP before you try to send.

4.5 Can I forward my mail to another address(es)?

Sure! Create a file named .forward in your home directory. This file should contain the address or addresses where your mail should be sent. To keep a local copy, this text should be in the file:
\yourusername, name@some.place.else.

If you want to forward your mail to foo@example.org then just log in using Putty/ssh and type:

pico .forward

This loads the pico or nano editor. Then just write the email address that you want to forward to.

foo@example.org

Save by pressing Ctrl-X and confirm with Y.

This works on most Unix-systems.

4.6 How do I forward my student/Umdac-mail to my ACC-account ?

You've got to tell the student mail-server to forward your mail to another address

In this case you do that by logging in on https://www.verktyg.umdac.umu.se/

Mail to your student adress is now forwarded to the adress you just entered.

Remember to verify that your forwarding really works! Send a mail to your student-address and check that it is delivered to the address you have forwarded to. Remember that there can be a small delay before the mail is delivered.

4.7 We need an alias for our group-account

See our help-page for group-accounts.

4.8 How do I filter mail into different folders ?

This is achieved by creating a configuration-file to procmail called .procmailrc in your home-directory. Read the related manpages, namely procmailrc for detailed instructions and procmailex for ready-made examples.
The format of .procmailrc is rather tricky at first, but very powerful when you get a hang of it.

4.9 What is Greylisting?

ACC is using an anti spam/virus technique that is called Greylisting. It means that the first time a triplet sendingcomputer/senderaddress/receiveraddress is seen, our mail server says "please come back later". The next time (if it has waited at least 5 minutes) all such mails will be let through without delay. This means that the first time you get a mail from person X from computer Y, it will be delayed a bit, but all such mails after that will arrive directly. All legitimate mail servers should keep mails until the reciving computer has received the mail, but spammers doesn't do this as it's cheaper to ignore that. They will just move on to the next address in their spam list and try that instead. Mail virus will be limited as well as they will not retry, but just go on and try the next address instead.
As with all anti spam methods there are cases where legitimate mails will be stopped and never arrive, but that should be very rare since even if you are not using greylisting mail servers can say "I'm busy right now, come back later". If the sending server can't handle this, the mail will be lost. If they do, they are also violating the requirements for email servers on the Internet.

What should I do if a mail I want has been stopped?
It could take a little while before the sending server tries again, so wait a little first. If it still doesn't arrive - contact support and we will look into it.

5. FTP

5.1 Why can't I login through FTP?

We have closed down regular FTP since it sends passwords in cleartext, use SCP/SFTP instead. See the file transfer help.

6. Misc

6.1 Printing

See http://www.acc.umu.se/help/newbie/printer.html.


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This page was last changed by wmaster on 09/02 - 2012.