Yes. As an example with postfix and ubuntu-server I only get one mail.
Received: from adelie.canonical.com (adelie.canonical.com [91.189.90.139])
by mailwash7.pair.com (Postfix) with ESMTP id 0255BAE46
for <email address hidden>; Sat, 2 Feb 2008 14:20:53 -0500 (EST)
Received: from forster.canonical.com ([91.189.90.190])
by adelie.canonical.com with esmtp (Exim 4.60 #1 (Debian))
id 1JLNv4-0001o2-7M
for <email address hidden>; Sat, 02 Feb 2008 19:20:54 +0000
Received: from localhost ([127.0.0.1] helo=forster.canonical.com)
by forster.canonical.com with esmtp (Exim 4.60 #1 (Debian))
id 1JLNv3-0006IA-Ru
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Yes. As an example with postfix and ubuntu-server I only get one mail.
Received: from adelie. canonical. com (adelie. canonical. com [91.189.90.139]) canonical. com ([91.189.90.190]) canonical. com with esmtp (Exim 4.60 #1 (Debian)) canonical. com) canonical. com with esmtp (Exim 4.60 #1 (Debian))
by mailwash7.pair.com (Postfix) with ESMTP id 0255BAE46
for <email address hidden>; Sat, 2 Feb 2008 14:20:53 -0500 (EST)
Received: from forster.
by adelie.
id 1JLNv4-0001o2-7M
for <email address hidden>; Sat, 02 Feb 2008 19:20:54 +0000
Received: from localhost ([127.0.0.1] helo=forster.
by forster.
id 1JLNv3-0006IA-Ru
for <email address hidden>; Sat, 02 Feb 2008 19:20:53 +0000
So I was suprised at the inconsistent behavior.