Verify an e-mail-adress - syntax and dns

[Bjoern Schliessmann]

Ingo Linkweiler wrote:

> b) verify an existing mailserver or DNS/MX records

"Or"? That's two different things.

If you don't know already: Even if you test all this, it is still
possible that

- the target mail account doesn't exist
- the sender's IP is filtered by the server so he'll reject
- the localpart has syntax errors (allowed chars in the localpart
are up to the server)

Regards,


Björn

-- 
BOFH excuse #280:

Traceroute says that there is a routing problem in the backbone. 
It's not our problem.