550 relaying to (recipient email) prohibited by administrator

B

Brendan

I can recieve mail, but when I send I get the message "550 relaying to
(recipient email) prohibited by administrator" returned.
 
G

Gordon

I can recieve mail, but when I send I get the message "550 relaying to
(recipient email) prohibited by administrator" returned.
Click to expand...

Are you authenticating your SMTP server?
 
V

Vanguard

Brendan said:
I can recieve mail, but when I send I get the message "550 relaying to
(recipient email) prohibited by administrator" returned.
Click to expand...

Off-domain port 25 (SMTP) traffic blocked to thwart spam from spamming or
infected customers:

http://www.commercestreet.com/Blocking_Port_25.htm
http://help.yahoo.com/help/us/mail/pop/pop-38.html

http://www.postcastserver.com/help/Port_25_Blocking.aspx
http://www.aota.net/Troubleshooting/port25.php4
http://www.spamhaus.org/faq/answers.lasso?section=ISP Spam Issues#133
http://www.findarticles.com/p/articles/mi_zdewk/is_200406/ai_ziff129473

http://www.google.com/search?q=+block++"port+25"++SMTP++spam
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

Authenticate? 1
outlook 2007 error 550 relaying prohibited 1
Insert name and adress from a list in a word document 1
Why are messages coming back undeliverable w/ a 550 message? 6
O2007 not sending emails when I am at hotspots 2
error msg:473 relaying prohibited,authent... 1
How to fix - 473 "e-mail address" relaying prohibited. You sho 1
550 5.7.1 Relaying denied: You must check for new mail before sen 5

Top