[BlueOnyx:21592] Re: 550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR

[Jeff Folk]

Lewis,

I get this on one of my 5208R boxes connected to Spectrum business class cable also. Interesting that another box also on Spectrum business class doesn’t have this issue, but that is another story... And good luck getting reverse dns in ipv6 with Spectrum!

The only way I have been able to take care of this is to enter a CLIENT_OPTIONS line in the m4 file and rebuild, then restart sendmail. 

CLIENT_OPTIONS(`Family=inet6,Addr=::ffff:1.2.3.4')dnl

Where 1.2.3.4 is your ipv4 address. 

You should also make sure you have reverse dns for your ipv4. 

Michael can add to this, but this has gotten me through. Of course  I have to redo this every time a config change is made in the GUI, but thankfully, I only have to remember this one box. 

Jeff
Sent from my iPhone

> On Dec 21, 2017, at 10:24 AM, Lewis Gardner <lewisg at iglou.com> wrote:
> 
> 
> On a 5209R box providing email connected to Insight/Spectrum cable ISP I'm getting complaints of the following error:
> 
>> The original message was received at Wed, 20 Dec 2017 09:37:36 -0500
>> from rrcs-96-11-138-58.central.biz.rr.com [96.11.xx.xx]
>>   ----- The following addresses had permanent fatal errors -----
>> <xxxx at oxxx.xxx>
>>    (reason: 550-5.7.1 [2607:fcc8:bbc1:af00:a6bf:1ff:xxxx:xxx] Our system has detected that)
>>   ----- Transcript of session follows -----
>> ... while talking to aspmx.l.google.com.:
>>>>> DATA
>> <<< 550-5.7.1 [2607:fcc8:bbc1:af00:a6bf:1ff:xxxx:xxx] Our system has detected that
>> <<< 550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR
>> <<< 550-5.7.1 records and authentication. Please review
>> <<< 550-5.7.1  https://support.google.com/mail/?p=IPv6AuthError for more information
>> <<< 550 5.7.1 . s15si3306798ith.152 - gsmtp
>> 554 5.0.0 Service unavailable
> 
> A quick Google shows this may be a problem for at least the last two years:
> 
> http://forums.businesshelp.comcast.com/t5/IPV6/Google-mail-requires-IPv6-PTR-record-but-Comcast-does-not-supply/td-p/27056
> 
> Is this fix, disabling IPV6 in postfix, applicable to 5209R?
> 
> http://tanguy.ortolo.eu/blog/article109/google-ipv6-smtp-restrictions
> 
> Hope I can get this fixed some users are migrating to outside personal accounts...
> 
> 
> TIA! HoHoHo!
> 
> 
> _______________________________________________
> Blueonyx mailing list
> Blueonyx at mail.blueonyx.it
> http://mail.blueonyx.it/mailman/listinfo/blueonyx