diff options
| -rw-r--r-- | README.SENDMAIL | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/README.SENDMAIL b/README.SENDMAIL index 092e80879..a48f13ed4 100644 --- a/README.SENDMAIL +++ b/README.SENDMAIL @@ -2,6 +2,19 @@ Mailman - The GNU Mailing List Management System Copyright (C) 1998,1999,2000,2001,2002 by the Free Software Foundation, Inc. 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA +SECURITY NOTE + + You may be tempted to set the DELIVERY_MODULE configuration + variable in mm_cfg.py to `Sendmail' when using the Sendmail MTA. + Don't. The Sendmail.py module is misnamed -- it's really a + command line based message handoff scheme as opposed to the SMTP + scheme used in SMTPDirect (the default). Sendmail.py has known + security holes and is provided as a proof-of-concept only. If you + are having problems using SMTPDirect.py please fix those instead + of using Sendmail.py, or you may open your system up to security + exploits. + + SENDMAIL `smrsh' COMPATIBILITY Many newer versions of Sendmail come with a restricted execution @@ -42,6 +55,17 @@ INTEGRATING SENDMAIL AND MAILMAN virtusertable - a sample for RFC 2142 address exceptions +PERFORMANCE NOTES + + One of the surest performance killers for Sendmail users is when + Sendmail is configured to synchronously verify the recipient's + host via DNS. If it does this for messages posted to it from + Mailman, you will get horrible performance. Since Mailman usually + connects via localhost (i.e. 127.0.0.1) to the SMTP port of + Sendmail, you should be sure to configure Sendmail /not/ to do DNS + verification synchronously for localhost connections. + + Local Variables: mode: text |