# host 66.47.111.74 74.111.47.66.in-addr.arpa domain name pointer user-112urqa.biz.mindspring.com. I have *.biz.mindspring.com blacklisted in my access file. The reverse dns for your ip address does not resolve to your domain. If you get this fixed, your mail will no longer be rejected. biz.mindspring.com has no mail exchangers listed. If there were I would have added an explicit allow for those servers. On Thu, 13 Nov 2003, Paul Gillen wrote: > A home-hobbyist tries to set up sendmail. (No, I'm > sticking with sendmail for now for obscure reasons of > my own, please spare us comments on alternatives.) > > Mail to redhat gets a "reason: 550 5.0.0 You must use > a valid mail server" in response: > > ------------ > The original message was received at Thu, 13 Nov 2003 > 14:25:15 -0500 > from paulgillen.riveralph.com [192.168.1.3] > > ----- The following addresses had permanent fatal > errors ----- > <webmaster@xxxxxxxxxx> > (reason: 550 5.0.0 You must use a valid mail > server) > > ----- Transcript of session follows ----- > ... while talking to mx1.redhat.com.: > >>> MAIL From:<Paul_Gillen@xxxxxxxxxxxxx> > <<< 550 5.0.0 You must use a valid mail server > 554 5.0.0 Service unavailable > > ------------------------- > Reporting-MTA: dns; www.riveralph.com > Received-From-MTA: DNS; paulgillen.riveralph.com > Arrival-Date: Thu, 13 Nov 2003 14:25:15 -0500 > > Final-Recipient: RFC822; webmaster@xxxxxxxxxx > Action: failed > Status: 5.0.0 > Diagnostic-Code: SMTP; 550 5.0.0 You must use a valid > mail server > Last-Attempt-Date: Thu, 13 Nov 2003 14:25:16 -0500 > > ==================================== > Presumably this is all DNS related. > > Noting: > Reporting-MTA: dns; www.riveralph.com > Received-From-MTA: DNS; paulgillen.riveralph.com > Using nslookup (I know, I know) and setting the server > to an Earthlink DNS server, for www.riveralph.com we > get: > > set type=any > > www.riveralph.com > Server: [207.69.188.185] > Address: 207.69.188.185 > > Non-authoritative answer: > www.riveralph.com internet address = > 66.47.111.74 > > riveralph.com nameserver = dns11.register.com > riveralph.com nameserver = dns12.register.com > riveralph.com nameserver = www.riveralph.com > dns11.register.com internet address = > 216.21.234.76 > dns12.register.com internet address = > 216.21.226.76 > www.riveralph.com internet address = > 66.47.111.74 > > > For paulgillen.riveralph.com we get: > > > paulgillen.riveralph.com > Server: [207.69.188.185] > Address: 207.69.188.185 > > Non-authoritative answer: > paulgillen.riveralph.com internet address = > 192.168.1.3 > > riveralph.com nameserver = 207.69.188.186 > riveralph.com nameserver = ns.riveralph.com > riveralph.com nameserver = 207.69.188.185 > > > > > Looking for the mail exhanger we get: > > > set type=mx > > riveralph.com > Server: [207.69.188.185] > Address: 207.69.188.185 > > Non-authoritative answer: > riveralph.com MX preference = 10, mail exchanger = > www.riveralph.com > > riveralph.com nameserver = ns.riveralph.com > riveralph.com nameserver = 207.69.188.185 > riveralph.com nameserver = 207.69.188.186 > > > > ================================ > Anyhow, both the MTAs, "www" the SMTP host and > "paulgillen" the POP3 client, appear to be valid and > resolvable. > > What am I missing? (Besides a few marbles for even > attempting this.) > > =Paul= > -- Matthew Galgoci System Administrator Red Hat, Inc 919.754.3700 x44155 -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
