[GTALUG] Spamhaus block

Marc Lijour marclijour at gmail.com
Thu Feb 21 14:43:24 EST 2019


I thought I had, and I do. OVH is allocating my PTR in a group of 8 
addresses (*ip-54-39-185.eu.*). May be that's where the problem lies? I 
sent a ticket to OVH.

$ dig -x 54.39.185.225

; <<>> DiG 9.11.4-3ubuntu5-Ubuntu <<>> -x 54.39.185.225
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25851
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;225.185.39.54.in-addr.arpa.    IN    PTR

;; ANSWER SECTION:
225.185.39.54.in-addr.arpa. 5990 IN    PTR *ip-54-39-185.eu.*

https://mxtoolbox.com/subnet/?filter=54.39.185.225/29&source=findmonitors&domain=54.39.185.225 


On 2019-02-21 2:17 p.m., Alex Volkov wrote:
> Do you have reverse DNS records set up -- this is pretty much a 
> requirement for running any mail server these days.
>
> This mailing list kept getting blocked by Spamhaus when we used IPv6 
> address to send out mail. I have no idea what was wrong with that, but 
> the minute I turned off IPv6 everything went back to normal.
>
> I remember there's an open-source mail config/blacklist checking 
> website tool, but I don't remember its name.
>
> Alex.
>
> On 2019-02-21 1:24 p.m., Marc Lijour via talk wrote:
>> Does anyone has insights about dealing with Spamhaus?
>>
>> I'm getting increasingly frustrated by being listed without 
>> explanation. I run a very low bandwidth mail server and a website for 
>> my business. I am running postfix with SPF, DKIM, and DMARC. I'd like 
>> to know what I am missing.
>>
>> Spamhaus is very popular which in turn affects Twitter, LInkedIn, 
>> beyond just the mail.
>>
>> Is it possible to run one's own mail server this days?
>>
>> ---
>> Talk Mailing List
>> talk at gtalug.org
>> https://gtalug.org/mailman/listinfo/talk
>
>
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