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  1.  Home
  2. MIDRANGE-L
  3. September 2004

Re: ISP blocking port 25, how to send mail from Iseries

I would double check the blocking of port 25 outbound. Blocking port 25 inbound would make since, but blocking port 25 outbound seams like that will decrease their business a lot. If they are blocking port 25 outbound to stop spammers from sending spam they are also stopping normal users from sending email. I would check if maybe your IP address was reported as a spammer and they blocked port 25 for just that IP address, I have heard of that. Maybe the IP addresses was reported as a spammer before you got the IP address, they might switch who has what IP addresses to stop servers also.

John Ross

Art Tostaine, Jr. wrote:

We used to send emails using our AS/400 SMTP server.  Now, Cablevision
in NJ blocking port 25 (Comcast did this 2 weeks ago)

We use another ISP to host our web server and email server, and in
outlook, we had to change to port 587 to reach the smtp server from
outlook.

So, is there a way to change the AS/400 to use that mail router?  I
was thinking of putting mail1.myisp.com:587, but I might need to use
Pop3 authentication before sending.

Anyone else doing this?


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