Erfahrungswerte"Openprotect"&"Mailscanner

-- anti-virus

    * optionally decodes/unpacks/decompresses the following formats: MIME, uuencode, xxencode, BinHex, compress, gzip, bzip, bzip2, zip, freeze, lzop, tar, cpio, rpm, rar, arc, arj, zoo, lha(lzh), tnef, cab;
    * includes support for 38 av scanners off-the shelf (see file amavisd.conf, variable @av_scanners, for the list);
    * easy support for command-line virus scanners (new entries are easily described and added to the list @av_scanners, file amavisd.conf);
    * virus scanners can be split in two lists: @av_scanners and @av_scanners_backup, the second list is only consulted if all primary scanners fail;
    * supports daemonized virus scanners (e.g. clamd, Sophie, Trophie, DrWebD, FRISK F-Prot) and scanners accessible via Perl modules (SAVI-Perl, Mail::ClamAV);
    * can specify recipient for whom virus checks need not be performed;
    * can specify recipients who want to receive viruses (with alert header field added (no header rewriting available with milter));
    * optionally add address extensions: e.g. user@domain -> user+virus@domain, if virus detected and desired to be passed;
    * can specify final_virus_destiny: reject, bounce, discard, pass (defaults to discard, with optional notification);
    * does not accuse innocent users of sending viruses if sender address is believed to be faked;

-- anti-spam

    * can favour (soft-whitelist) envelope senders (since 2.0) by lowering computed spam score according to recipient's individual wishes;
    * can blacklist (or soft-blacklist) envelope senders or domains whose messages should be considered spam;
    * bypass_spam_checks: can specify users or subdomains (envelope recipients) for whom spam checks need not be performed;
    * spam_lovers: can specify users or subdomains (envelope recipients) who want to receive spam, with alert header line added; (no header rewriting available with milter);
    * optionally add address extensions (known as plus-addressing): e.g. user@domain -> user+spam@domain, if spam is detected and is desired to be passed;
    * can specify final_spam_destiny: reject, bounce, discard, pass (defaults to bounce, but DSN is muted above a cutoff level);
    * can send spam notifications to spam admin, which include the full Mail::SpamAssassin report;
    * spam headers are inserted on a per-user basis according to their tag/tag2 level settings; this means that a multi-recipient message is split into clusters of recipients with same settings if needed (not available with milter interface). This permits per-recipient individual settings, while still being efficient for multi-recipient messages;
    * SpamAssassin check is called only once per message regardless of the number of recipients, all header editing and actions taken is then done by amavisd-new for each recipient individually, based on its settings.