Re: SPF entries for IPv4 & IPv6

2017-01-03 Thread A. Schulze
Matthias Fechner: Am 02.01.2017 um 16:41 schrieb A. Schulze: One may publish records like "v=spf1 a -all" for a host mail.example.org mail.example.org. A 192.0.2.25 mail.example.org. 2001:db8::6:25 mail.example.org. TXT "v=spf1 a -all" This require two or

Re: SPF entries for IPv4 & IPv6

2017-01-03 Thread Matthias Fechner
Am 02.01.2017 um 16:41 schrieb A. Schulze: > One may publish records like "v=spf1 a -all" for a host mail.example.org > > mail.example.org. A 192.0.2.25 > mail.example.org. 2001:db8::6:25 > mail.example.org. TXT "v=spf1 a -all" > > This require two or three dns lookups

Re: SPF entries for IPv4 & IPv6

2017-01-02 Thread Richard Damon
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

RE: SPF entries for IPv4 & IPv6

2017-01-02 Thread L . P . H . van Belle
section-2.3 Greetz, Louis > -Oorspronkelijk bericht- > Van: s...@andreasschulze.de [mailto:owner-postfix-us...@postfix.org] Namens > A. Schulze > Verzonden: maandag 2 januari 2017 16:42 > Aan: postfix-users@postfix.org > Onderwerp: Re: SPF entries for IPv4 & IPv6

Re: SPF entries for IPv4 & IPv6

2017-01-02 Thread Per Thorsheim
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

Re: SPF entries for IPv4 & IPv6

2017-01-02 Thread 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.org mail.example.org. A 192.0.2.25 mail

Re: SPF entries for IPv4 & IPv6

2017-01-02 Thread Sebastian Nielsen
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

SPF entries for IPv4 & IPv6

2017-01-02 Thread Per Thorsheim
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