Problems sending emails out from my Win2003 server....

[AyacLab]

Hi Everyone!

I have an emergency issue here. I have a Win2003 server, running MailEnable mailserver and many websites. I use HttpASP to send emails out using Classic ASP code. Everything has worked like a charm until now... A few days ago, NONE of my emails get out of the box. When I send an email using ASP, the program says "Emails are sent, everything is ok", so there is no error message, but I never get emails on the other side.
Even more frightening when I use the web interface of MailEnable to send a simple email from one of my domains, I never get it. So somehow the entire SMTP out line is blocked, mailfunctioning and I have no clue why because I have not changed anything in my system...

Is there any wisdom out there? Where shall I start debugging? I have looked at the log files but they are meaningless to me... Could this be a problem out of my server or? Please help!

 

[AyacLab]

Hi all!

I think I have figured it out, but I post it in case you get into a similar situation...
I am blacklisted at spamhaus.org... hopefully the removal from this list will resolve my issue.

 

[cmeagan656]

You need to find out why you were listed at spamhaus.org. They're one of the more reliable blacklisters. Check your entire network for malware. If you get blacklisted a second time it isn't going to be as easy to get your IP address removed from the blacklist.

Hope this helps.

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[58sniper]

Make sure your firewall only allows outbound SMTP traffic from your server, and not <any>.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

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