Re: Email has come to a screeching halt!
From: Stephen M. Adams (adamst_at_no.spam)
Date: 05/05/05
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Date: 5 May 2005 19:33:14 GMT
jwilli46@cpp.net writes:
>The tech staff denies blocking any ports. but I figured they'd say as
>much.
>
>Maybe I'm confused here---I thought on my Linux box that port 25 was
>used to SEND mail, and that 110 was used to RECEIVE mail.
25 is send/receive SMTP - that is, your server sends mail out this port
and receives new mail in via this port.
110 is the client delivery port - that is, an email client picks up mail
via this port for POP3 (or 143 for IMAP).
So, if someone sends you email, it goes from port 25 on their server to
port 25 on your server, then you pick it up via port 110.
>If, from another machine outside my domain, I "telnet mydomain 25",
>it times out, although from within my network it responds OK.
If 'mydomain' is the registered MX server for your domain, and it times
out from the outside, you aren't going to get any mail delivered to your
server.
>Does this point to port 25 being blocked by my ISP?
Or the sendmail/postfix/qmail daemon is not running. But if you can connect
from the inside on port 25, then either your ISP is blocking port 25 or your
firewall/router is blocking it.
>Again, I can successfully send mail to other domains; I can't receive
>mail from outside my own domain.
When you send out, it goes via port 25 to your ISP's SMTP server, and out
from there - as you noted in your first post.
Drop me a note via email or post here if you need more help..
-Stephen
--
Space Age Cybernomad Stephen Adams
malchus842SP@AMgmail.com (remove SPAM to reply)
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