09-04-2009
Sendmail through DNS?
Hello Guruz,
There is a mailserver with IPrange, i could able to resolve it through DNS,
nslookup <IP>
Its resolving.
But not pinging, port 25 is open for mailserver IP.
But when i am sending mail, i am geting the below error
dsn=x.x.x, stat=Host unknown (Name server: xxx.xxx.xxx.xx: host not found)
Could some one tell me how to configure sendmail through DNS?
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LEARN ABOUT DEBIAN
guards
GUARDS(1) User Contributed Perl Documentation GUARDS(1)
NAME
guards - select from a list of files guarded by conditions
SYNOPSIS
guards [--prefix=dir] [--path=dir2:dir2:...] [--default=0|1] [-v|--invert-match] [--list|--check] [--config=file] symbol ...
DESCRIPTION
The script reads a configuration file that may contain so-called guards, file names, and comments, and writes those file names that satisfy
all guards to standard output. The script takes a list of symbols as its arguments. Each line in the configuration file is processed
separately. Lines may start with a number of guards. The following guards are defined:
+xxx Include the file(s) on this line if the symbol xxx is defined.
-xxx Exclude the file(s) on this line if the symbol xxx is defined.
+!xxx Include the file(s) on this line if the symbol xxx is not defined.
-!xxx Exclude the file(s) on this line if the symbol xxx is not defined.
- Exclude this file. Used to avoid spurious --check messages.
The guards are processed left to right. The last guard that matches determines if the file is included. If no guard is specified, the
--default setting determines if the file is included.
If no configuration file is specified, the script reads from standard input.
The --check option is used to compare the specification file against the file system. If files are referenced in the specification that do
not exist, or if files are not enlisted in the specification file warnings are printed. The --path option can be used to specify which
directory or directories to scan. Multiple directories are separated by a colon (":") character. The --prefix option specifies the
location of the files.
AUTHOR
Andreas Gruenbacher <agruen@suse.de> (SuSE Linux AG)
perl v5.14.2 2012-03-04 GUARDS(1)