Outgoing mails getting marked as spam

[kool_kid]

Hi

When I sent mails from Scalix box to domain like yahoo then my mails are getting marked as spam and yahoo puts them in "Bulk Mail" folder it also happens with other domains. Why is it happening any ideas? or any pointers?

[les]

Hi

When I sent mails from Scalix box to domain like yahoo then my mails are getting marked as spam and yahoo puts them in "Bulk Mail" folder it also happens with other domains. Why is it happening any ideas? or any pointers?

Firstly check the headers of the messages at yahoo, they may carry info on what the spam score was and what tests it triggered.

If you are sending directly from your scalix box, then you should check out your domain and ip address to ensure they are not blacklisted anywhere. See the following websites listed here....

http://www.cyberpro.com.au/Tips_n_Trick ... _Checking/

Lastly.....it is sometimes better to relay via your ISP's smtp server rather than send directly.

In scalix thats as simple as a SMART_HOST entry in your sendmail config.

Hope that helps.

[kool_kid]

Unbelievable my email ip address is blacklisted ( don't know how far its true. It also says my email server isn't reverse DNS configured. My server is situated inside the network and I'm forwarding all ports to my ISP IP, do you think thats the problem there of showing that reverse DNS not been configured?

[jaime.pinto]

You either *own* the IPs you've been assigned from your ISP or you don't.

If you own them, meaning, they have been dedicated to your company's domain for exclusive use, then your domain has the authority to keep lookup tables for forward and reverse domain name resolution. The drawback is that your ISP may assign you some *dirty IP*, previously banned by several institutions. Cool-off periods for dirty IP's are often over 4 years so you're better off not accepting those IPs.

IPs are getting blacklisted almost immediately (3 minutes) if you have open relays on your mail server. In this case your ISP won't do much for you, so you may have to ask their blessing to use their servers as the smarthost for you scalix server (as suggested before).

Yahoo and pretty much every other major mail servers out there won't accept emails from any non-authenticated MTAs, that means, the IP of your mail server *MUST* have a matching forward and a reverse lookup domain.

Often times ISPs *share* the same IP amongst several companies for smarthost purposes, and if one of the companies get spam hacked, all the companies under that IP umbrella gets compromised.

You may want to look into *domainkey* setup for your company as an alternative.