Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

ISP Got spammed

How to whitelist IP's if the service provider is Blacklisted, the result of this is undeliverable mails as they are getting bounced back. While some specify the reason, others say PTR records missing. Pls suggest

Thanks in Advance

2 REPLIES
Blue

Re: ISP Got spammed

You must work with your provider in some cases.

Other cases simply require a reverse-lookup in your dns.

please see the following links for more info on dns reverse-lookups:

reverse lookup tool -

http://www.zoneedit.com/lookup.html or

http://remote.12dt.com/rns/

description - http://support.microsoft.com/kb/164213

RFC - http://www.ietf.org/rfc/rfc1035.txt?number=1035

Re: ISP Got spammed

HI Satya,

The IP's can be whitelisted unless & until the ISP pay to the Blacklisting authority and control the No# of SPAM Messages.

The Temporary workaroud is, if the ISP has a RELAY Service means kindly avail the same. This might solve your problem of Mailing issues.

Hope I am Informative.

Pls RATE if HELPS

Best Regards,

Guru Prasad R

232
Views
0
Helpful
2
Replies
CreatePlease to create content