SMTP: Err Msg: Warning No Return Path

Last reviewed: October 20, 1997
Article ID: Q107087

2.10 3.00 WINDOWS kb3rdparty kbtlc

The information in this article applies to:

Microsoft Mail Gateway to SMTP, versions 2.1 and 3.0

SYMPTOMS

The Microsoft Mail Gateway to SMTP displays this warning:

  WARNING No return path
  [tx] 250 Sender OK

CAUSE

The name provided in the "mail from" received by the sending host is incomplete or contains a null value:

   [rx] mail from:<>

RESOLUTION

None necessary: this message is informational only and requires no action by the Mail Administrator. The Gateway continues to process mail.

MORE INFORMATION

The example below shows an address without a beginning "<" and an ending ">". This log file was created using the undocumented -CD option which tells the Gateway to display debug information.

   >Incoming SMTP connection from [192.245.59.139]
   [tx] 220 All set, fire away
   [rx] hello fake.host.com
   [tx] 250 Hi there, pleased to meet you
   [rx] mail from:jdoe
   >WARNING No return path
   [tx] 250 Sender OK

Additional reference words: 2.10 3.00 2.1 3.0 warning
KBCategory: kb3rdparty kbtlc
KBSubcategory: MailGWSMTP

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Last reviewed: October 20, 1997
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