Re: [ilugd] Sendmail Relaying

[Vivek Kapoor]

On 12/19/2012 11:22 AM, Tux Techie wrote:

Hi,

I have a local mail server on MX for my domain. Sendmail configured as MTA.
Users are able to send mails to each other. For relaying mails to outside
domains, I'm using SMARTHOST for my hosting. Now I'm trying to send the
mails directly to the outside domains, I've created the SPF records for my
domains with all the ip's sending mails for my server and the reverse DNS
entries for the IP also. But still i'm getting mail bounce error from many
domains stating

1. This message has been blocked because the HELO/EHLO domain is invalid.
2. host mta6.am0.yahoodns.net [98.138.112.38]: 554 Message not allowed -
[299]


When you connect with another server, you identify yourself. If you're 
doing just a regular connection and not an authenticated one (such as 
via SMTP AUTH), then it's a HELO.


For instance, do this

$ telnet gmail-smtp-in.l.google.com. 25
$ helo mydomain.com
$ quit

If you get a 2XX response (e.g. 250), then it means the server has 
accepted your hostname with which you're identifying yourself. In your 
case, the domain that you're identifying yourself with is not getting 
accepted. It should be a fully qualified domain name (FQDN), and also 
ideally should resolve to the same IP of your server. If you've not done 
any custom configuration, then the HELO name would be the hostname of 
your machine.


Creating a SMTP server is now quite complicated, especially if you wish 
to get the emails in user's inbox. If you already have a host which can 
relay mails for you, then do that.


Best regards
Vivek Kapoor
http://exain.com

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Re: [ilugd] Sendmail Relaying

[Balvinder Rawat]

Have you tried following in sendmail.mc:

define(`confDOMAIN_NAME', `mail.mydomain.com')dnl

where mail.mydomain.com is your domain or MX record

Also try to set the hostname to mail.mydomain.com

Hope it helps..

Regds
Balvinder Rawat


On Wed, Dec 19, 2012 at 4:52 PM, Vivek Kapoor subs...@exain.com wrote:

 On 12/19/2012 11:22 AM, Tux Techie wrote:

 Hi,

 I have a local mail server on MX for my domain. Sendmail configured as
 MTA.
 Users are able to send mails to each other. For relaying mails to outside
 domains, I'm using SMARTHOST for my hosting. Now I'm trying to send the
 mails directly to the outside domains, I've created the SPF records for my
 domains with all the ip's sending mails for my server and the reverse DNS
 entries for the IP also. But still i'm getting mail bounce error from many
 domains stating

 1. This message has been blocked because the HELO/EHLO domain is invalid.
 2. host mta6.am0.yahoodns.net [98.138.112.38]: 554 Message not allowed -
 [299]


 When you connect with another server, you identify yourself. If you're
 doing just a regular connection and not an authenticated one (such as via
 SMTP AUTH), then it's a HELO.

 For instance, do this

 $ telnet gmail-smtp-in.l.google.com. 25
 $ helo mydomain.com
 $ quit

 If you get a 2XX response (e.g. 250), then it means the server has
 accepted your hostname with which you're identifying yourself. In your
 case, the domain that you're identifying yourself with is not getting
 accepted. It should be a fully qualified domain name (FQDN), and also
 ideally should resolve to the same IP of your server. If you've not done
 any custom configuration, then the HELO name would be the hostname of your
 machine.

 Creating a SMTP server is now quite complicated, especially if you wish to
 get the emails in user's inbox. If you already have a host which can relay
 mails for you, then do that.

 Best regards
 Vivek Kapoor
 http://exain.com


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