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Home » Kerio User Forums » Kerio Connect » Warning - Reverse DNS does not match SMTP Banner (Getting error when sending mail to some server live yahoo)
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googleice

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Dear Friends,

i am new to kerio i am testing kario connect and kerio winroute server.
i setup one kerio connect behind kerio winroute firewall.
now i when i am sending mail i got this erro 550 or Warning - Reverse DNS does not match SMTP Banner.

i want to know where is problem where i set SMTP Banner

Specification of my network
1. Kerio connect ip :- 172.16.252.252 (local)
2. Kerio Winroute ip : 172.16.252.50 (local) + 124.16.96.3 (Public IP)
3. i creat Mx Record and my Dns setting at godaddy.com

i am getting mail but when i send i got error in some server

Please resolve this issue so i convence my boss's for get but kerio connect and kerio winroute firewall both.

Regards
Msr
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marook

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Well, you would have to do the fixing, but I would assume you need to make sure the reverse DNS record on you internal LAN is resolving to you hostname: mail.yourcompany.com

And maybe you also need to get you ISP to resolve the external IP to you hostname: mail.yourcompany.com

Regards,

Jakob Peterhänsel
Consultant - Humac A/S

Apple Certified Support Professional (ACSP)
Apple Certified Technical Coordinator (ACTC)
AppleSeed/CQF member since 1998
Kerio Messaging Partner
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freakinvibe

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As you can receive mails fine, your DNS MX records with Godaddy are ok.

The problem is that your external IP address 124.16.96.3 has no reverse lookup set, i.e. the PTR record is missing. You have to contact your ISP and have him set this record.

This is not a KMS problem, you would have to set this with any mail server.


Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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googleice

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Can We do this with SPF records.

in godaddy.
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freakinvibe

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No, SPF is unrelated to PTR records. You have to contact your ISP.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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