Let's describe the main features of the Mail System at CAHA, starting with this document index:
For any problem or suggestion, you can contact any of the Computer Department personnel at:
If you are calling from outside CAHA, the main telephone is: 950632500. If you want to contact any of the above personnel directly, just swap the last 500 by the extension given up there.
Speaking about guarantee of delivery, we have to say that, although a big percent of the cases mail messages will reach quickly their destination, the Mail Service will never guarantee any message delivery. There could be lots of circumstances that could affect the delivery: sudden cuts on communication lines (internal and/or external to CAHA), message limits exceeded, messages refused, etc... Lots of these situation are external to CAHA.
Any computer that sends electronic mails outside CAHA, must use as mail server: caserv.caha.es (126.96.36.199) If someone sends a mail directly from its own personal computer, without using the mail server, the mail will not be delivered
As you can see, normal IMAP (not secure one) is not allowed on both internal and external connections.
|IMAP Server Name||caserv.caha.es (188.8.131.52)|
|Identification Method||Normal passowrd (account credentials)|
|SMTP Server Name||caserv.caha.es (184.108.40.206)|
|Identification Method||Normal password (account credentials)|
All acounts are centralized on a server with NIS maps.
Speaking about incoming mails, if a mail is coming with a virus inside, it is not inmediately eliminated. It is saved on a quarantine directory, and the receiver user is notified that the mail has a virus inside and it is quarantined. The user is also asked to contact Computer Department if he thinks the mail is good. And also he/she is told that if he/she is not telling anything to the Computer Department, the mail will be deleted after two weeks.
For outgoing mails, everything is similar. If an outgoing mail is detected with a virus inside, it is quarantined, and, inmediately, the postmaster will receive a mail informing about the incidence, with references to the sender, the receiver of the infected mail, and finally, the type of the virus. Again, the virus message will be deleted from the system two weeks after it is received.
In any case, the sender is not notified about the virus. It will be the postmaster the one who will decide if the sender has to be notified or not. Normally, this kind of warning will be done only if the virus is coming from a local user.
Computer Department has stablished, as well, a vigilance tasks concenring anti-virus installation on personal computers. This is another protection level.
Apart from the anti-spam programs use, since february 2005, CAHA Mail Service is running SPF (Sender Policy Framework) and DKIM.
Log files are stored in gzip format, as soon as they grow. We keep these gzipped files during one year. After that they will be deleted.
Anyway, speaking about Electronic Mail, we can put here some advices that will help preventing problems. Let's see some of them: