Re: [gentoo-user] [OT] Setting up correct domainname
On Sunday 20 September 2009, Stroller wrote: On 20 Sep 2009, at 12:30, Mick wrote: ... -The following addresses had permanent fatal errors- email_acco...@isp.com (reason: 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain) -Transcript of session follows - ... while talking to smtp.ISP.com: MAIL From:nag...@myserver.mydomain.com SIZE=745 AUTH= 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain 554 5.0.0 Service unavailable Does this fail because the ISP's reverse DNS on my dynamically allocated IP address resolves to an ISP domain instead of myserver.mydomain.com? I'm not quite clear. Does the myserver.mydomain.com resolve to the server actually sending the mail? I think that may be what they're asking for. Thanks Stroller! That was it! For some reason the particular subdomain had been taken out of the list of DynDNS and therefore it would no longer resolve to the server's IP address. It goes to show ... start with the obvious things first. Thank goodness I did not started hacking the sendmail configuration! Ha, ha! -- Regards, Mick signature.asc Description: This is a digitally signed message part.
[gentoo-user] [OT] Setting up correct domainname
Hi All, Up until a few months ago the ISP of the network in question was happy to accept and relay messages from my server myserver.mydomain.com which runs nagios. My server gets its IP address from the ISP in question dynamically so I use DynDNS to map the subdomain.domain name to it. To be able to relay messages I of course have set up sendmail to authenticate using email_acco...@isp.com/passwd_on_ISP. When the ISP stopped accepting messages I started getting this error message: -The following addresses had permanent fatal errors- email_acco...@isp.com (reason: 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain) -Transcript of session follows - ... while talking to smtp.ISP.com: MAIL From:nag...@myserver.mydomain.com SIZE=745 AUTH= 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain 554 5.0.0 Service unavailable Does this fail because the ISP's reverse DNS on my dynamically allocated IP address resolves to an ISP domain instead of myserver.mydomain.com? Is there something I could change in the configuration of my server to make this work again? -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] [OT] Setting up correct domainname
On 20 Sep 2009, at 12:30, Mick wrote: ... -The following addresses had permanent fatal errors- email_acco...@isp.com (reason: 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain) -Transcript of session follows - ... while talking to smtp.ISP.com: MAIL From:nag...@myserver.mydomain.com SIZE=745 AUTH= 550 5.1.0 nag...@myserver.mydomain.com sender rejected : invalid sender domain 554 5.0.0 Service unavailable Does this fail because the ISP's reverse DNS on my dynamically allocated IP address resolves to an ISP domain instead of myserver.mydomain.com? I'm not quite clear. Does the myserver.mydomain.com resolve to the server actually sending the mail? I think that may be what they're asking for. Stroller.
