emails disappear¡¡FC4 and sendmail troubles

[pandora]

Sorry for my english.

I´ve got a big trouble with my server FC4. I´m not able to recieve any email from yahoo, and I can send mail from my domain. No "ERROR" not, no delivery e-mail in yahoo box. imapd and pop are configurated. Please somebody know what I´m doing wrong??.

Thank you very much for your attention and for being merciful with my poor english.

[falko]

Do you receive emails from other domains than Yahoo? Then it might be that you're on a Yahoo blacklist or don't have proper PTR or SPF records. Is your server on a DSL line with a dynamic IP address?

[pandora]

Thank you very much for your attention¡¡

At the end we´ve changed router. And by the moment works smoothly (we are crossing our fingers). We´ve got DHCPD. Sometimes we´ve got troubles with port 25. We´ve not received no yahoo, no hotmail, no gmail, nothing from out of our domain.

I don´t know why but always we´ve got problems with incoming mails. We reconfigurated, we changed netcard,...As you can see if is not one problem is another....

By the moment, it works,....

I´m very thankfull for your attention¡¡
Nice meet you¡¡¡ :) :) :) :)

[falko]

We´ve not received no yahoo, no hotmail, no gmail, nothing from out of our domain.
Then you should check if you're on a blacklist. This is quite likely if your server is on a dynamic IP address.