How can I solve the problem of "IPs with missing PTR records." to send email through postfix with port 25 from local pc?
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AAB0360FEF: to=<abcd@gmail.com>, relay=gmail-smtp-in.l.google.com[64.233.170.27]:25, delay=2.9, delays=0.02/0.02/2/0.84, dsn=5.7.25, status=bounced I am trying to send email to gmail through postfix with port 25 from local pc or localhost. I have installed postfix, opendkim and configured these. /etc/hostname has "mydomain.com". So the sender is user1@mydomain.com. I have followed this website: https://netcorecloud.com/tutorials/c...ostfix-ubuntu/ How can I solve the problem of "IPs with missing PTR records." to send email through postfix with port 25 from local pc? Where will I write PTR record? How can I write PTR record? |
This is the "whole other subject" I spoke of in your other post. There is much involved in hosting an email server.
PTR records are DNS entries. Gmail probably wants to see an rDNS record for your IP. What does Code:
dig -x (your IP) You’ll also need TXT DNS entries for your domain for SPF and DKIM.. Those entries will be in the authoritative name servers for your domain. Typically, those are provided by your domain registrar. It’s also unlikely that email coming from a dynamic IP address will be accepted by gmail or Oath (AOL/Yahoo) or any server using an RBL that identifies dynamic IPs. |
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I have got: "We notice you are on a blacklist.". Listed 5 times with 2 timeouts. Blacklist for BARRACUDA, SORBS SPAM, Spamhaus ZEN, UCEPROTECTL2, UCEPROTECTL3. Timeout: MADAVI, NoSolicitado. Can it be a problem?
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As scasey said
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(& yes, it's the 'outside' ip addr of your router which is the one that counts ie the one that faces the public internet) Most ISPs only hand out a static IP if you pay extra for a 'business' acct (or similar) with them. |
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You cannot set the rDNS of an IP. I can’t even set the rDNS of static IPs I’ve been assigned…I have to request the ISP that owns the IPs do that for me. They’re happy to do that, given the big(ish) bucks I pay them. What are you trying to accomplish? If it’s to learn to setup and run a mail server, start by acquiring a static IP from a reputable provider, and be prepared to do a LOT of study and learning to make it work. If it’s to be able to use your domain to send email, the simplest, easiest way to do that is to contract with a domain/web hosting provider to provide those services. Some can be quite reasonable. |
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