users cant use our smtp server when not connected to us.

[Drachenhunter]

Hello,

I work for an internet service provider that just receintly opened up our own mail server(before we were using the server of a corprate isp) and some of our users are getting the following error when not dialed up directly into our network:

socket error: 10051 0x800CCOE the host mail.(us).com could not be found.

this only happens with customers that are traveling and use differant isps to get access, not our local customers.

I discovered that this error has something to do with port 25 being blocked either on our end or on the end of the service provider they are using. Is there anyway to fix this?

Any input would be greatly appreciated.

 

[Davetoo]

If, for example, your customer was using Earthlink as their ISP when they travel, then no, there's nothing you can do straight forward. Earthlink is one of several ISP's that block port 25 for their subscribers, thereby making it impossible for them to use anyone but Earthlink's SMTP server(s).

Two things they can do: 1 - Use their other ISP's SMTP server when they're not dialed into you. 2 - Depending upon what email server your using, you could create a second virtual server for SMTP on a different port than 25, and have your customers change their client mail to use this other port.

 

[Drachenhunter]

Thanks for the info, That was basically what I thought we'd have to do.