Re: 550 smtpGated01 Connection rejected due to DNSBL: DNSBL: zen.spamhaus.org: 127.0.0.4

> I've sent the following log the the SMTP Service provider, but they said 
> the IP 127.0.0.4 is NOT their IP, and i try to ping 
> "mail6.hosting.net.hk", the IP is 123.176.100.23, would like to ask for 
> help, I am lost.....
>
> Log:
> 2015.05.14 17:40:30 (Thu)------------Start of Session-----------------
> Blat v3.2.4 (build : Feb 24 2015 21:29:33)
> 32-bit Windows, Full, Unicode
> <<<getline<<< 220 mail6.hosting.net.hk ESMTP
> >>>putline>>> EHLO ............
> <<<getline<<< 250-mail6.hosting.net.hk
> <<<getline<<< 250-STARTTLS
> <<<getline<<< 250-AUTH LOGIN PLAIN
> <<<getline<<< 250-AUTH=LOGIN PLAIN
> <<<getline<<< 250-PIPELINING
> <<<getline<<< 250 8BITMIME
> Sending readme.txt to [email protected]
> Subject: TESTING
> Login name is [email protected]
> Try number 1 of 10.
> >>>putline>>> MAIL FROM:<[email protected]>
> <<<getline<<< 550 smtpGated01 Connection rejected due to DNSBL: DNSBL: 
> zen.spamhaus.org: 127.0.0.4
> *** Error ***  The SMTP server does not like the sender name.
> *** Error ***  Have you set your mail address correctly?
> >>>putline>>> QUIT
> <<<getline<<< 221 smtpGated01 Signing off.
>
> 2015.05.14 17:40:30 (Thu)-------------End of Session------------------


Lucia,

IP address 127.0.0.4 is not legitimate.  The log shown above tells me that 
you are connecting to mail6.hosting.net.hk, but your login credentials are 
not being provided.  Did you use the -u and -pw options?  I think you are 
missing these two options that will let you authenticate to the server. 
Without that authentication, the email server is rejecting your connection.

There is another item to check.  Does the server require an encrypted 
connection?  The "250-STARTTLS" says the server supports an encrypted 
connection using SSL / TLS, but your log above is now showing it.  Are you 
using another program, like stunnel, for establishing an SSL / TLS 
connection?

Chip