Date: Fri, 27 Aug 2010 10:15:03 -0400 From: "Peter C. Lai" <peter@simons-rock.edu> To: Ronald Klop <ronald-freebsd8@klop.yi.org> Cc: freebsd-stable@freebsd.org, Andriy Gapon <avg@icyb.net.ua> Subject: Re: cname replace in mail address? [off-topic] (Re: Attn Ronald Klop) Message-ID: <20100827141503.GA57669@cesium.hyperfine.info> In-Reply-To: <op.vh27cqoy8527sy@212-123-145-58.ip.telfort.nl> References: <4C74261A.4000401@icyb.net.ua> <op.vh27cqoy8527sy@212-123-145-58.ip.telfort.nl>
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Does the recipient MTA actually receive for both klop.yi.org *and* thuis.klop.ws? The recipient MTA will dereference the CNAME and rewrite the envelope for the reason that it can only relay to an RR that points to a real host. You might be able to fix it if you configure the mta on thuis.klop.ws to accept mail for the thuis.klop.ws domain in addition to klop.yi.org (which I assume is how you have it setup). In a situation like this if you have domain CNAME originaldomain then you better make sure that someone can send to either @domain AND @originaldomain otherwise it doesn't make sense. On 2010-08-27 10:03:52AM +0200, Ronald Klop wrote: > offtopic, but why do some mailers replace a CNAME in a mail-address? > > root@sheeva2:/var/vmail# host klop.yi.org > klop.yi.org CNAME thuis.klop.ws > thuis.klop.ws A 212.123.145.58 > > It is not the first time that I'm bitten by this, but I never understood > it. > > Ronald. > > On Tue, 24 Aug 2010 22:05:46 +0200, Andriy Gapon <avg@icyb.net.ua> wrote: > > > > > Ronald, > > > > your email address bounces, that's inconvenient. > > > > > > -------- Original Message -------- > > Subject: Returned mail: Service unavailable > > Date: Tue, 24 Aug 2010 23:03:33 +0300 (EEST) > > From: Mail Delivery Subsystem <MAILER-DAEMON@citadel.icyb.net.ua> > > To: <avg@icyb.net.ua> > > > > The original message was received at Tue, 24 Aug 2010 23:03:27 +0300 > > (EEST) > > from porto-e.starpoint.kiev.ua [212.40.38.100] > > > > ----- The following addresses had permanent fatal errors ----- > > <ronald-freebsd8@thuis.klop.ws> > > > > ----- Transcript of session follows ----- > > ... while talking to thuis.klop.ws.: > >>>> RCPT To:<ronald-freebsd8@thuis.klop.ws> > > <<< 554 5.7.1 <ronald-freebsd8@thuis.klop.ws>: Relay access denied > > 554 <ronald-freebsd8@thuis.klop.ws>... Service unavailable > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" -- =========================================================== Peter C. Lai | Bard College at Simon's Rock Systems Administrator | 84 Alford Rd. Information Technology Svcs. | Gt. Barrington, MA 01230 USA peter AT simons-rock.edu | (413) 528-7428 ===========================================================
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