On Wed, May 22, 2002 at 06:16:37AM -0000, Darrell May <[EMAIL PROTECTED]> wrote: > > Greg Zartman <[EMAIL PROTECTED]> said: > > > Darrell, > > > > Have you received an offlist response to this? I had a very similar > > concern when reading the SME 5.5 announcement. I find the "email > > blocking" blocking system that you helped to create to be quite useful. > > No reply to date, either onlist or off :-(
We have been somewhat busy... We needed to replace qmail-smtpd to provide hooks for other tools, such as virus scanning. This is not possible with qmail-smtpd without patching qmail-queue, and this is not allowed by the qmail distribution license. We also wanted to be able to block certain addresses at the front door to avoid false positives from SMTP anti-relay testers. However, we've had a number of problems with Obtuse SMTPD. Further examination of the code made us decide that an alternative would be preferable to further patching. Obtuse SMTPD was originally written to protect sendmail servers, and in doing so provides many checks and rewrites which are not required for qmail as qmail is not susceptible to the same sendmail breakage. We also had serious problems with mail headers and bodies in non US-ASCII being modified, which is particularly difficult when this release contains internationalisation support :-) Finally, we were maintaining Obtuse SMTPD. Mailfront is a drop-in replacement for qmail-smtpd which provides hooks for other tools to examine mail before queueing it. It will have the ability to handle patterns in the badmailfrom and badrcptto lines soon. At that point it will have all of the features required. Naturally, if someone wants to add the pattern matching before we or the author does, we're willing to accept the patches. Gordon -- Gordon Rowell [EMAIL PROTECTED] Director, Engineering Network Server Solutions Group http://www.e-smith.com/ Mitel Networks Corporation http://www.mitel.com/ -- Please report bugs to [EMAIL PROTECTED] Please mail [EMAIL PROTECTED] (only) to discuss security issues Support for registered customers and partners to [EMAIL PROTECTED] To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Archives by mail and http://www.mail-archive.com/devinfo%40lists.e-smith.org
