I am able to send emails to all domains except 1 (abcd.com).
The following error is coming while sending any emails to abcd.com. I checked MX record, Telnet to port 25 everything is perfect. I can send emails by using Webmail, problem is while using port 25. Can anyone explain what will be the issue.
From: System Administrator [mailto:System Administrator]
Sent: Wednesday, January 14, 2015 7:25 PM
Subject: Delivery Failure
Could not deliver message to the following recipient(s):
Reason: Remote host said: 601 Attempted to send the message to the following
ip's:
xxx.xx.xx.xx (recipient ip address)
-- The header and top 20 lines of the message follows --
Received: from Sender (UnknownHost [xx.xxx.xx.xx]) by
mail.smartermail.com with SMTP;
Wed, 14 Jan 2015 15:58:44 +0300
Subject: xxxxx
Date: Wed, 14 Jan 2015 15:58:43 +0300
Message-ID: <000001d02ff9$d627$@com>
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_0001_01D03012.FB746C00"
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: AdAv6irpTdSa/yRNRJGZxx274XXz3QAD0JMg
Content-Language: ar-sa
This is a multipart message in MIME format.
------=_NextPart_000_0001_01D03012.FB746C00
Content-Type: multipart/related;
boundary="----=_NextPart_001_0002_01D03012.FB746C00"
------=_NextPart_001_0002_01D03012.FB746C00
Content-Type: multipart/alternative;
boundary="----=_NextPart_002_0003_01D03012.FB746C00"
------=_NextPart_002_0003_01D03012.FB746C00
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit