550 5.1.1 <Recipient emailaddress> User unknown; rejecting

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itsmesri
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550 5.1.1 <Recipient emailaddress> User unknown; rejecting

Post by itsmesri » 2016-04-20 03:15

Recently I have changed my hmail server from dynamic to Static (Clean IP). I have right rDNS which points to mail.intensifytech.com.

But I am still getting 550 5.1.1 errors for when I am sending to Distribution list about 100 people. I know the recipient user exists on server. What could be wrong? Anything hmailserver configuration issues?

Image

SMTP Logs
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Code: Select all

"SMTPC"	5612	68294	"2016-04-19 19:08:09.464"	"72.54.39.148"	"RECEIVED: 220 mail.adso.com ESMTP IceWarp 10.4.5; Wed, 20 Apr 2016 05:38:16 +0530"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.464"	"72.54.39.148"	"SENT: EHLO mail.intensifytech.com"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.495"	"72.54.39.148"	"RECEIVED: 250-mail.adso.com Hello mail.intensifytech.com [76.213.79.2], pleased to meet you.[nl]250-ENHANCEDSTATUSCODES[nl]250-SIZE[nl]250-EXPN[nl]250-ETRN[nl]250-ATRN[nl]250-DSN[nl]250-CHECKPOINT[nl]250-8BITMIME[nl]250-AUTH PLAIN LOGIN DIGEST-MD5 CRAM-MD5 GSSAPI[nl]250-STARTTLS[nl]250 HELP"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.495"	"72.54.39.148"	"SENT: STARTTLS"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.526"	"72.54.39.148"	"RECEIVED: 220 2.0.0 Ready to start TLS"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.620"	"72.54.39.148"	"SENT: EHLO mail.intensifytech.com"
"SMTPC"	5680	68294	"2016-04-19 19:08:09.651"	"72.54.39.148"	"RECEIVED: 250-mail.adso.com Hello mail.intensifytech.com [76.213.79.2], pleased to meet you.[nl]250-ENHANCEDSTATUSCODES[nl]250-SIZE[nl]250-EXPN[nl]250-ETRN[nl]250-ATRN[nl]250-DSN[nl]250-CHECKPOINT[nl]250-8BITMIME[nl]250-AUTH PLAIN LOGIN DIGEST-MD5 CRAM-MD5 GSSAPI[nl]250 HELP"
"SMTPC"	5680	68294	"2016-04-19 19:08:09.651"	"72.54.39.148"	"SENT: MAIL FROM:<nag@intensifytech.com>"
"SMTPC"	5680	68294	"2016-04-19 19:08:09.857"	"72.54.39.148"	"RECEIVED: 250 2.1.0 <nag@intensifytech.com>... Sender ok"
"SMTPC"	5680	68294	"2016-04-19 19:08:09.857"	"72.54.39.148"	"SENT: RCPT TO:<dinesh@silverxis.com>"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.888"	"72.54.39.148"	"RECEIVED: 550 5.1.1 <dinesh@silverxis.com> User unknown; rejecting"
"SMTPC"	5612	68294	"2016-04-19 19:08:09.888"	"72.54.39.148"	"SENT: QUIT"
"SMTPC"	4600	68294	"2016-04-19 19:08:09.920"	"72.54.39.148"	"RECEIVED: 221 2.0.0 mail.adso.com closing connection"

IP Ranges
----------

Local 192.168.1.65 to 192.168.1.254 Priority 20 <-- This my router local network for ip.
Localhost 76.213.79.2 to 76.213.79.2 P 19
MyComputer 127.0.0.1 to 127.0.0.1 P 15
Internet 0.0.0.0 to 255.255.255.255 P10

all are SMTP authenticated and No external to external.


Please tell me how to resolve this issue?

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mattg
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Re: 550 5.1.1 <Recipient emailaddress> User unknown; rejecting

Post by mattg » 2016-04-20 06:17

That log clearly has the remote server saying 'user unknown'

You should contact the mail admin of that server and ask them why, if you are sure that you have the correct address...
Just 'cause I link to a page and say little else doesn't mean I am not being nice.
https://www.hmailserver.com/documentation

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Dravion
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Re: 550 5.1.1 <Recipient emailaddress> User unknown; rejecting

Post by Dravion » 2016-04-20 13:54

The Users EMail-Address was disabled, renamed, or deleted

C:\>dig mx silverxis.com +short
10 mail.silverxis.com.

220 mail.adso.com ESMTP IceWarp 10.4.5; Wed, 20 Apr 2016 17:21:43 +0530
HELO fool
250 mail.adso.com Hello fool [95.115.13.88], pleased to meet you.
MAIL FROM:<info@disney.com>
250 2.1.0 <info@disney.com>... Sender ok
RCPT TO:<dinesh@silverxis.com>
550 5.1.1 <dinesh@silverxis.com> User unknown; rejecting
quit
221 2.0.0 mail.adso.com closing connection
Connection to host lost.
C:\>

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