FOREIGN_ANTI_VIRUS

This feature adds anti-virus protection for those sites that for policy or other reasons must run anti-virus systems other than Windows Defender on their servers. Support for these "foreign" anti-virus systems is not fully integrated with LISTSERV in the same way as Windows Defender, but LISTSERV will give the AV system the opportunity to disinfect messages.

The anti-virus system must be installed on the LISTSERV server and must block creation of .EXE files containing a virus with an error of "access is denied".

Use of this feature is at your own risk. Because the foreign AV system is not fully integrated with LISTSERV in the same way as Windows Defender, LISTSERV cannot check that the AV system is up and running and has up-to-date virus definitions. It can only assume that any file that is not denied access does not contain a virus. If you use this feature, it is recommended that you test it thoroughly and set up an external monitoring system to make sure that the anti-virus system is always active.

Since the foreign AV system is not integrated with LISTSERV, it won't know which viruses have been detected. Anti-virus reports will identify every virus detected as "unknown virus".

This feature is part of the LISTSERV message scanner and requires current maintenance.