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The talented company programmers developed a unique client-independent technology tocheck for viruses messages received via IMAP4.
IMAP4 (Internet Mail Access Protocol version 4) Â is a protocol supporting theprocessing of e-mails on the mail server. Using this protocol, users can store andsort their e-mail messages on the mail server which means they can share messagesbetween several workstations. This is a very important option for businesstravellers or those who work at home.
Checking e-mail via IMAP, a common e-mail client slightly changes its nature turninginto an e-mail browser and ceasing just e-mail loading as when working via POP3.IMAP allows to download a message in segments (titles, text, attachment) in contrastto downloading a message as a single file. It keeps your traffic low and preventsdownloading of unnecessary massages in a single file mode. This attribute makesanti-virus check difficult as the whole letter should be intercepted and checked,preferably at one go, not when each segment of the letter is being downloaded, whichcauses traffic skyrocketing.
The developers of Doctor Web, Ltd. created a technology for IMAP mail processingthat strictly abides by the mail agent policies and follows the logic of the agent'sactions, but at the same time leaves no chance for any malware to infiltrate intolocal mailboxes. Thus users receive a means for secure processing of mail messagesstored on IMAP-servers which is totally independent from a mail client.
Till now, the complexity of IMAP did not allow workstation-based anti-virus scannersto correctly handle mails stored on IMAP-servers and this was potentially dangerousbecause of possible infiltrations of infected codes into user machines. Thetechnology implemented in SpIDer Mail mail monitor of Dr.Web Anti-virus is based onthe company's fundamental approach to processing mail messages  a malicious codemust not be passed over to the mail client on the workstation and must not get intolocal user mailboxes. The same principle was in the basis of POP3 mail scanimplemented in the first version of SpIDer Mail 4 years ago. Dr.Web was then thefirst AV-program to implement the correct handling of incoming messages downloadedvia POP3.
The developers of SpIDer Mail made another step forward and extended the mailprotection technique to IMAP server folders. IMAP protocol allows users to store infolders on servers not only mail messages but other information and give access toother users to such folders. New technology implemented in SpIDer Mail allows tocheck messages placed into such folders and thus prevents infiltration of infectesmails into a server.
