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#1
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
This shouldn't be the problem, as he is using Outlook to connect directly to his Exchange server over the Internet, so its going to be using RPC over HTTPS and will be using Exchange's mechanisms to send mail.
Souns to me like they aren't allowing that anymore. I'd ask them that specifically. |
#2
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
Comcast is blocking your port 25 to any SMTP servers except their own. You can either change your Exchange server to listen on an alternate/additional port (587 is common), or use their SMTP server (smtp.comcast.net) to send mail.
Large ISPs do this as a preventative measure against comprimised computers sending out large amounts of spam. |
#3
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
ghostbeef,
I'll check into that. Thanks. I'll be pretty pissed if I can't use Outlook anymore, since the web client is lame. |
#4
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
[ QUOTE ]
Comcast is blocking your port 25 to any SMTP servers except their own. You can either change your Exchange server to listen on an alternate/additional port (587 is common), or use their SMTP server (smtp.comcast.net) to send mail. Large ISPs do this as a preventative measure against comprimised computers sending out large amounts of spam. [/ QUOTE ] You cannot use Outlook from a remote location to connect to an internal corporate Exchange environment over the Internet unless you are using RPC over HTTPS. This means absolutely all communication with Exchange, and therefore sending emails, is occuring over port 443 and 80 to his companies Exchange front-end servers. |
#5
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
I called Comcast back and the rep confirmed what ghostbeef said. They only allow outgoing e-mail through their SMTP server (although that still doesn't explain why incoming wasn't working, either).
We went through some steps to try to fix it, but it still didn't work. He then told me Outlook Express should work and that I should set my incoming to POP3, using my Exchange server address and outgoing to SMTP (Comcast). I don't have Outlook Express on my work computer right now, so I just tried it on my other computer and, what do you know, it worked. All my e-mails downloaded and test e-mails back and forth went through. So, I guess I'll be using Outlook Express, which I suppose I don't mind. As long as I have all my old sent and received e-mails, I'm happy. Thanks for everyone's help! |
#6
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
I actually have to lol at the fact this is the way it works for you.
This is quite an insecure setup. Your companies IT department must be....uninformed. |
#7
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
[ QUOTE ]
I actually have to lol at the fact this is the way it works for you. This is quite an insecure setup. Your companies IT department must be....uninformed. [/ QUOTE ] It's not my company's IT department that is setting it up this way. It is Comcast. Comcast is the company preventing me from using Outlook. It worked fine with them as late as April and it worked fine with AT&T. |
#8
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Re: Changed ISP\'s, now can\'t send/receive e-mail w/Outlook
I give up.
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