| PASS | Reverse DNS entries for MX records | OK. The IPs of all of your mail server(s) have reverse DNS (PTR) entries. RFC1912 2.1 says you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry. Note that this information is cached, so if you changed it recently, it will not be reflected here (see the www.DNSstuff.com Reverse DNS Tool for the current data). The reverse DNS entries are: 111.111.111.111.in-addr.arpa xxxxxx.com. [TTL=81192] |
| PASS | Connect to mail servers | OK: I was able to connect to all of your mailservers. | |
| WARN | Mail server host name in greeting | WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software. This is also a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server. Note that this one test may use a cached DNS record. xxxxxxx.com claims to be invalid hostname 'xxxxxx': <br /> 220 xxxxxx Winmail Mail Server ESMTP ready <br /> | |
| PASS | Acceptance of NULL <> sender | OK: All of your mailservers accept mail from "<>". You are required (RFC1123 5.2.9) to receive this type of mail (which includes reject/bounce messages and return receipts). | |
| PASS | Acceptance of postmaster address | OK: All of your mailservers accept mail to postmaster@xinzestone.com (as required by RFC822 6.3, RFC1123 5.2.7, and RFC2821 4.5.1). | |
| WARN | Acceptance of abuse address | WARNING: One or more of your mailservers does not accept mail to abuse@xinzestone.com. Mailservers are expected by RFC2142 to accept mail to abuse. xxxxxx.com's abuse response:<br /> >>> RCPT TO:<abuse@xxxxxxxx.com><br /> <<< 553 mailbox not found <br /> | |
| PASS | Acceptance of domain literals | OK: All of your mailservers accept mail in the domain literal format (user@[59.61.80.246]). | |
| PASS | Open relay test | OK: All of your mailservers appear to be closed to relaying. This is not a thorough check, you can get a thorough one here. xxxxxxxx.com OK: 553 sorry, you don't authenticate or the domain isn't in the list of allowed rcpthosts <br /> | |
| WARN | SPF record | Your domain does not have an SPF record. This means that spammers can easily send out E-mail that looks like it came from your domain, which can make your domain look bad (if the recipient thinks you really sent it), and can cost you money (when people complain to you, rather than the spammer). You may want to add an SPF record ASAP, as 01 Oct 2004 was the target date for domains to have SPF records in place (Hotmail, for example, started checking SPF records on 01 Oct 2004). |
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