If using IP addresses in SPF records, is it necessary to specify both
IPv4 & IPv6 addresses? Is there currently a risk of unwanted problems if
only IPv4 (or only IPv6) addresses are specified, when a mailserver is
available using both 4 & 6?
--
Best regards,
Per Thorsheim
Twitter: @thorsheim
OFC you must specify both unless you have completely disabled sending of
outgoing mail via IPv6.
Per Thorsheim skrev: (2 januari 2017 14:16:04 CET)
>If using IP addresses in SPF records, is it necessary to specify both
>IPv4 & IPv6 addresses? Is there currently a risk of unwanted problems
>if
>o
Am 02.01.2017 um 14:18 schrieb Sebastian Nielsen:
> OFC you must specify both unless you have completely disabled sending of
> outgoing mail via IPv6.
I think, that's wrong
One may publish records like "v=spf1 a -all" for a host mail.example.org
mail.example.org. A 192.0.2.25
mail
Den 02.01.2017 16.41, skrev A. Schulze:
>
> Am 02.01.2017 um 14:18 schrieb Sebastian Nielsen:
>> OFC you must specify both unless you have completely disabled sending of
>> outgoing mail via IPv6.
>
> I think, that's wrong
>
> One may publish records like "v=spf1 a -all" for a host mail.example
No mx lookup in the SPF?
Why not :
mail.example.org. TXT "v=spf1 mx ip4:1.2.3.4 ip6:: -all"
And why no A record
Every host in you dns with A can send, which is not (always) what you want.
For example: www.example.org and now you server gets comprimized and is
spamming.
On 1/2/17 8:16 AM, Per Thorsheim wrote:
If using IP addresses in SPF records, is it necessary to specify both
IPv4 & IPv6 addresses? Is there currently a risk of unwanted problems if
only IPv4 (or only IPv6) addresses are specified, when a mailserver is
available using both 4 & 6?
Your SPF recor
[An on-line version of this announcement will be available at
http://www.postfix.org/announcements/postfix-3.1.4.html]
Postfix stable release 3.1.4 is available, as well as legacy releases
3.0.8 and 2.11.9. There will be no further updates for Postfix 2.10.
Fixed with Postfix 3.1.4, 3.0.8, and 2.
