Mandatory? I'm googling, but can't find a document that declares it =20
mandatory and only sendmail seems to do it.
I think it is lame to use DNS info to rewrite e-mail addresses, but the =20
person who made it 'mandatory' will have good reasons for it.
Does somebody have a pointer to the specs about this?
Ronald.
On Fri, 27 Aug 2010 10:21:27 +0200, Mark Andrews <marka@isc.org> wrote:
>
> In message <op.vh27cqoy8527sy@212-123-145-58.ip.telfort.nl>, "Ronald =20
> Klop" writ
> es:
>> offtopic, but why do some mailers replace a CNAME in a mail-address?
>
> Because it used to be manditory to do so. If you don't want it to
> be done use a MX record.
>
> klop.yi.org MX 0 thuis.klop.ws
>
> If you need klop.yi.org to have a address record then give it one.
>
> klop.yi.org A 212.123.145.58
>
> Mark
>
>> 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 =20
>> understood =3D
>> =3D20
>> it.
>>
>> Ronald.
>>
>> On Tue, 24 Aug 2010 22:05:46 +0200, Andriy Gapon <avg@icyb.net.ua> =20
>> 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=
=20
>> =3D20
>> > (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
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