Rob, Patrick, > > RFC 2006 <http://tools.ietf.org/rfc/rfc2606.txt> indicates you are right. > > I need to do some testing. Maybe I jumped to the wrong conclusion why > > specifying "localhost" only causes problems. > > reject_non_fqdn_helo_hostname will catch a bare 'localhost' since it has > no '.', but 'localhost.' doesn't work either, since the implementation > specifically checks for '.' within the string. So it'll cause problems > here either way, but... > [...] > I'd say that's a mistake, and not one amavisd-new should be trying > particularly hard to avoid. On my systems, I reject any HELO coming from > the outside that looks like localhost, the box's own addresses or domain > names, the RFC 2606 reserved names, and a handful of common pseudo-TLDs, > including '.localdomain'. But it's perfectly fine to use 'localhost' over > the loopback:
Well, so far the 'localhost' seems to have caused least surprises. Initially the default was to use $myhostname, but that caused Postfix to complain about mail looping. I agree that 'localhost.' may indeed be a little bit better choice - but in the absence of 'search' or 'domain' in /etc/resolv.conf (at the MTA host) they are both the same. Not sure if it is worth changing the defult, considering that the reject_non_fqdn_helo_hostname will reject either. Mark ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user Please visit http://www.ijs.si/software/amavisd/ regularly For administrativa requests please send email to rainer at openantivirus dot org
