Solaris 10 Sendmail connection timed out

[CalgaryCR9]

My Solaris 10 server running sendmail 8.13.6 gives me the following error in sending:

Connection timed out with host.domain.com

I can send to email addresses at my ISP's domain, eg: user@telus.com Telus is my ISP.

From my prompt I typed: cat filename | mailx -v user@external_domain.com (used real filename and real external email address).

Result:
<cut for brevity>
>>> MAIL From:<me@host.mydomain.com>...Sender OK
<cut>
250 2.1.5 <user@external_domain.com>...Recipient ok
354 Enter amil, end with "." on a line by itself
>>>>.
then it hangs.

When I run this on a different Solaris 8 server running the same version of sendmail it runs successfully & the message gets delivered.

/etc/mail/local-host-names has my FQDN hostname in it, as does /etc/hosts.

I have compared the two sendmail.cf files. The only difference I can see is that we're using two different domains (correct setup. One is for one domain, the other is for another domain).

Suggestions? Google and this forum are overwhelming for a sendmail rookie like me

 

[mbrooks]

When you mean ISP? Is this a home box?

M. Brooks

http://mbrooks.info

 

[CalgaryCR9]

Yes, this is a home box. My spouse works for the ISP and has made sure our domain is in DNS.

 

[mbrooks]

Most ISP's intentionally block the mail port (25) to keep users from hosting their own mail servers.
The "connection timed out" error is along those lines.

M. Brooks

http://mbrooks.info

 

[CalgaryCR9]

I am getting this checked out. However, I can send to my work domain, but not to other email addresses. My work domain is not the same as the ISP.

Thanks for replying so quickly.

 

[mbrooks]

According to the DSL reports Telus blocks port 25.

http://www.dslreports.com/faq/10283

M. Brooks

http://mbrooks.info

 

[CalgaryCR9]

I did a test to have DNS from my work server vs using Telus's. I still had the problem.

Argg.