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Operating Systems Linux Sendmail bounce to postmaster Post 302762581 by DGPickett on Monday 28th of January 2013 05:13:17 PM
Old 01-28-2013
I think the default used to do that, but hackers could exploit it to test for mailboxes. So, this setup should be only on intranet hosts, not Internet exposed ones. The rewrite rule sets in sendmail.cf are not for the weak of heart. Overview of Configuration Files Riley wrote one of their thickest books on it. Many competing mail servers with gui configuration have sprung up to compete with the default. I found a reverse tip, something maybe you can undo: Sendmail rewrites email address to send to the local machine instead? - Server Fault
Added define(LUSER_RELAY',local:root')dnl to return undeliverable mail to unknown users to root instead of to sender, per serverfault.com/questions/274211/sendmail-dsn-user-unknownsapark Oct 6 '11 at 18:51
 

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Libravatar::URL(3pm)					User Contributed Perl Documentation				      Libravatar::URL(3pm)

NAME
Libravatar::URL - Make URLs for Libravatars from an email address SYNOPSIS
use Libravatar::URL; my $url = libravatar_url( email => 'larry@example.org' ); DESCRIPTION
See <http://www.libravatar.org> for more information. Functions libravatar_url # By email my $url = libravatar_url( email => $email, %options ); # By OpenID my $url = libravatar_url( openid => $openid, %options ); Constructs a URL to fetch the Libravatar for the given $email address or $openid URL. %options are optional. "libravatar_url" will accept all the options of "gravatar_url" in Gravatar::URL except for "rating" and "border". The available options are... size Specifies the desired width and height of the avatar (they are square). Valid values are from 1 to 512 inclusive. Any size other than 80 may cause the original image to be downsampled using bicubic resampling before output. size => 40, # 40 x 40 image default The url to use if the user has no avatar. default => "http://www.example.org/nobody.jpg" Relative URLs will be relative to the base (ie. libravatar.org), not your web site. Libravatar defines special values that you may use as a default to produce dynamic default images. These are "identicon", "monsterid", "wavatar" and "retro". "404" will cause the URL to return an HTTP 404 "Not Found" error instead and "mm" will display the same "mystery man" image for everybody. See <http://www.libravatar.org/api> for more info. If omitted, Libravatar will serve up their default image, the orange butterfly. base This is the URL of the location of the Libravatar server you wish to grab avatars from. Defaults to <http://cdn.libravatar.org/avatar/> for HTTP and <https://seccdn.libravatar.org/avatar/> for HTTPS. short_keys If true, use short key names when constructing the URL. "s" instead of "size", "d" instead of "default" and so on. short_keys defaults to true. https If true, serve avatars over HTTPS instead of HTTP. You should select this option if your site is served over HTTPS to avoid browser warnings about the presence of insecure content. https defaults to false. LICENSE
Copyright 2011, Francois Marier <fmarier@gmail.com>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/artistic.html SEE ALSO
<http://www.libravatar.org> - The Libravatar web site <http://www.libravatar.org/api> - The Libravatar API documentation perl v5.14.2 2012-04-04 Libravatar::URL(3pm)
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