bandy@lll-lcc.UUcp (Andrew Scott Beals) (02/25/86)
In article <11992@ucbvax.BERKELEY.EDU> fair@ucbarpa.berkeley.edu.BERKELEY.EDU (Erik E. &) writes: >There have been some misconceptions and I have a point to add: And a point of information that I would like to clear. (You really should get someone to fix rrn, Erik) >1. sendmail does loop detection by counting Received: headers, > WITH ITS OWN HOSTNAME IN THEM. After 30 such lines (i.e. > thirty times through this host), the letter gets mailed > to postmaster. It does not arbitrarily throw away letters > that have passed through 30 hosts. As distributed, MAXATOM (in src/conf.h) is set to 100. This is the allowable number of tokens in an address. "eric@berkeley" is three atoms. Addresses longer than MAXATOM will get truncated. This usually creates addresses that look like: one!and!another!hop!thru!bel!tel!land!before!we!reach!ihnp4! With the address getting chopped off somewhere in the middle. Sigh. Unfortunately, this also seems to be the way that sendmail is distributed with other systems (Pyramid). -- I'm PROUD to be a CARBON-BASED lifeform! andy beals bandy@lll-crg.arpa {ihnp4,seismo,qantel,sun}!lll-crg!bandy LLNL, P.O. Box 808, L-419, Livermore CA 94550 (415) 423-1948