Sendmail - Sender address rejected: Domain not found

Hi All,

We are encountering a issue with sendmail in RT. Following is the maillog from the /var/log

Sendmail [102342]: psfafEADaAd: to=<mary@cch.ca, delay=02:00:29, xdelay=00:00:02, mailer=esmtp, pri=79782, relay=relay-ex2.cch.ca. [IP Address], dsn=4.1.8, stat-Defferred: 450 4.1.8 apache@rt.domain.com: Sender address reject: Domain not found

We are suspecting it is a issue of sending emails to subdomain email addresses. Meaning emails to abc@xyz.com will go out and but sometimes emails with abc@lmn.xyz.com are not going out. We could be wrong…problem could be somewhere else.

Any help will be really appreciated.

Thank you.

Hi.

The address you are sending from is deferred in the recipient’s mail server, because the domain does not exist. Do you have a MX record for the sender domain?

/JohanFrom: rt-users-bounces@lists.bestpractical.com [mailto:rt-users-bounces@lists.bestpractical.com] On Behalf Of Yaj Tap
Sent: den 13 juni 2011 22:12
To: rt-users@lists.bestpractical.com
Subject: [rt-users] Sendmail - Sender address rejected: Domain not found

Hi All,

We are encountering a issue with sendmail in RT. Following is the maillog from the /var/log

Sendmail [102342]: psfafEADaAd: to=<mary@cch.ca, delay=02:00:29, xdelay=00:00:02, mailer=esmtp, pri=79782, relay=relay-ex2.cch.ca. [IP Address], dsn=4.1.8, stat-Defferred: 450 4.1.8 <apache@rt.domain.commailto:mary@cch.ca,%20delay=02:00:29,%20xdelay=00:00:02,%20mailer=esmtp,%20pri=79782,%20relay=relay-ex2.cch.ca.%20[IP%20Address],%20dsn=4.1.8,%20stat-Defferred:%20450%204.1.8%20<apache@rt.domain.com>: Sender address reject: Domain not found

We are suspecting it is a issue of sending emails to subdomain email addresses. Meaning emails to abc@xyz.commailto:abc@xyz.com will go out and but sometimes emails with abc@lmn.xyz.commailto:abc@lmn.xyz.com are not going out. We could be wrong…problem could be somewhere else.

Any help will be really appreciated.

Thank you.

Hi Johan,

Actually, This machine is a clone of the one of the RT that we have. And that RT got apache@rt.domain.com address (which is working fine) but this one should be apache@rt02.domain.com (I think??)

It is working fine but just for some sub-domain email addresses it throws up error with apache@rt.domain.com

I checked apache configuration and other places where it could have wrong info but everything is fine. Not sure how this can be corrected. Sorry for the incorrect info in my previous email.

Thanks for your help.From: Johan.Sjoberg@deltamanagement.se
To: rt-users@lists.bestpractical.com
Date: Mon, 13 Jun 2011 21:12:07 +0000
Subject: Re: [rt-users] Sendmail - Sender address rejected: Domain not found

Hi.

The address you are sending from is deferred in the recipient’s mail server, because the domain does not exist. Do you have a MX record for the sender domain?

/Johan

From: rt-users-bounces@lists.bestpractical.com [mailto:rt-users-bounces@lists.bestpractical.com] On Behalf Of Yaj Tap
Sent: den 13 juni 2011 22:12
To: rt-users@lists.bestpractical.com
Subject: [rt-users] Sendmail - Sender address rejected: Domain not found

Hi All,

We are encountering a issue with sendmail in RT. Following is the maillog from the /var/log

Sendmail [102342]: psfafEADaAd: to=<mary@cch.ca, delay=02:00:29, xdelay=00:00:02, mailer=esmtp, pri=79782, relay=relay-ex2.cch.ca. [IP Address], dsn=4.1.8, stat-Defferred: 450 4.1.8 apache@rt.domain.com: Sender address reject: Domain not found

We are suspecting it is a issue of sending emails to subdomain email addresses. Meaning emails to abc@xyz.com will go out and but sometimes emails with abc@lmn.xyz.com are not going out. We could be wrong…problem could be somewhere else.

Any help will be really appreciated.

Thank you.

Hi Johan,

Actually, This machine is a clone of the one of the RT that we have. And that RT
got [1]apache@rt.domain.com address (which is working fine) but this one should be
[2]apache@rt02.domain.com (I think??)

Check that 02.domain.com is actually a valid domain outside your
firewall. Since you’re obfuscating, we can’t check for you.

Your error message says that relay-ex2.cch.ca believes that
apache@rt.domain.com is invalid.

-kevin

Can anyone help with this?

We are getting apache@rt.domain.com: Sender address rejected: Domain not found error

If you need more info, please let me know.

Thank you.

Can anyone help with this?

We are getting apache@rt.domain.com: Sender address rejected: Domain not found error

As I replied earlier:

Check that 02.domain.com is actually a valid domain outside your
firewall. Since you’re obfuscating, we can’t check for you.

Your error message says that relay-ex2.cch.ca believes that
apache@rt.domain.com is invalid.

You’re sending mail from an invalid domain and something is rejecting
it. You’ll need to ensure that your DNS is visible to the server
accepting email.

-kevin