smtp help

[Megadeth]

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'user@domain.com'. Subject 'Re: test', Account: 'mail.domain.com', Server: 'mail.domain.com', Protocol: SMTP, Server Response: '550 5.7.1 Unable to relay for user@domain.com', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

One of our employees started getting this error at home... There are several employees who for the past few years have had an email account setup on Outlook Express and it has been working fine up untill a week or so ago... All these people use Comcast as their ISP and use our Email service for their POP3 and SMTP...

They have no problem sending any thing to an email account that is setup on our server (example would be my email account here at work) however they can't seeme to send to anything else (example, my hotmail account)... I honestly do not know if the other 9 or 10 peopel are having this problem at home, but I am thinking they are... I tried going to a seperate location that has Comcast and set this email account up in outlook express and the same thing was happening... I then removed the account and tried my work email account and it was not working either... I went to my house and Tried setting it up through my WOW internet connection and got the same error....

I should mention that everything works perfectly if i sign this account on through webmail instead of going through Outlook.

Any help would be appreciated. Thanks.

 

[polm]

Why not try having your remote users use their ISP's SMTP service ? Most ISPs will allow their customers to relay as long as they are on the service providers network.

Other than that, you need to configure some relay settings in your SMTP server config.

BTW..what SMTP service do you run ?

 

[Garion]

That is, actually, a good thing. Most company mail relays are set to be closed systems - They won't accept mail destined for anyone other than domains that they are responsable for. If the were, it would be considered an "open relay" - Pretty much carte blanche for the spammers of the world to use to deliver their millions of e-mails for.

You should have your users configure their POP mail to your server and their SMTP server to their local ISP. Should work fine.

- G