Email

[mike]

I probably have the wrong forum, but

 

 

I have a client that is able to get her email but not send out.

 

She says it doesn't find my server.

 

her incoming is mail.mysite.com

and her outgoing the same.

[TCH-Rick]

From the description it sounds like her ISP may block port 25 to external SMTP servers. She should try changing the SMTP port to port 26 and try sending.

[mike]

thanks Rick. I will have her try that.

[matman]

Are you suggesting changing the SMTP port on the server? Is that something we can do through CPanel?

[TCH-Thomas]

No. It should be changed in your email client.

[matman]

I guess I'm wondering how that would work. If I tell the client to send out SMTP mail to port 26, how will that work unless the server is also listening on port 26?

 

I thought that servers listened on specific ports for specific types of traffic.

[stevevan]

Port #26 is one of the "common" ports for email. Many ISP's are changing this from 25 to 26 now to help combat spam.

 

(The jury's still out on how well it is working! )

[MikeJ]

Actually port 25 is the RFC-compliant port for SMTP traffic and why some ISP's block it as a spam prevention measure. 26 is not (and the reason why most of the time it isn't blocked by ISP's), but we allow SMTP traffic on port 26 as well to allow customers that are being blocked on port 25 from their ISP's to be able to send mail through our servers still.

 

If I tell the client to send out SMTP mail to port 26, how will that work unless the server is also listening on port 26?

 

The answer to that is that TCH servers listen on both port 25 and port 26 for SMTP mail already.

[matman]

Ah, OK, got it. I had never heard of port 26 being used for SMTP, but I knew there were a bunch of other ports ISPs were starting to use.

 

Thanks!