
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?
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