[lug] Sendmail

[Chip Atkinson]

I'm not sure I entirely understand the problem, but it sounds like what 
Qwest does too.  Basically you have to use their machines as relays for 
outbound mail. Why is this a problem?  I run a moderately busy mailing 
list and haven't had any problem with the relay part.  Originally I 
wanted to do my own delivery to reduce their load, but since they want 
it that way, I just said to myself "screw 'em".

Greg Horne wrote:

> Check this out!
> 
> So I go on a consulting job to a company to set them up with e-mail 
> through my company.  There e-mail is @company.com, so smtp.company.com 
> is what they would use for mail servers.  Port 25 for sending and port 
> 110 for receiving.  I set everybody up, and checking mail was just 
> fine.  When I went to send a test mail they got the error 10,060, which 
> when I looked it up meant that their ISP (Netcom) is blocking all 
> outgoing port 25 communication unless is goes through their mail servers 
> first (smtp.ix.netcom.com).  I sent an e-mail to netcom and am waiting 
> for a response.  I also looked around the net and found that to get 
> around this people are using alternate ports for sending like 2500.  My 
> question is this:  How can I set up sendmail to use port 25 for e-mail, 
> but also use a new port 2500 for the mail @company.com?  Can these two 
> ports work in tandem or would I have to move all clients to 2500?
> 
> Thanks,
> Greg Horne
> 
> P.S.  A lot Netcom does this blocking of port 25 to other smtp servers 
> to prevent their users from spamming.  When a coworker of mine talked to 
> them on the phone they said it was in the terms of use.  Bleh!
> 
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