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I have a few clients who have email accounts (POP) with other hosts, but I allowed them to use my server for outgoing mail. I gave them a valid username, set SMTP Auth to ON, and used port 587. This was working perfectly until last week and now they are getting email sent bounced back to them. I changed...

Hi, We have a web site running on dot.net 3.5 and iis6, which we are using System.Net.Mail.SmtpTransport.SendMail() to send email to our customers, but after we installd SmarterMail, we are getting following errors by sending email from inside of our web site program. is ther any solution for this problem...

Error 550 in Outlook / Express: 'Authentication required for relay'. We have the following settings: Allow Relay: Nobody Bypass relay settings when using SMTP authentication: checked Require SMTP Authentication: Checked In Outlook - 'My server requires authentication': checked. The only...

I have moved SM to a new server. v3.3.2621 with Declude. Everything works fine except SMTP Auth. I have read this board to troubleshoot this issue but it's still not working. Settings > General > Security > Allow Relay = Only Local Users (I have also tried Nobody) Settings > Protocol >...

Hi, with regards to relaying. I do an authenticated relay with Smartermail. Here is my example: I login on user@a.com (my smartermail server), then i send a mail from user@b.com to user@c.com which works fine, except when i look at the message in the inbox, i find that the return path shows user@b.com...