Hi Victor. On 4/06/2010 12:17 PM, Victor Duchovni wrote: > What is your MUA? What SMTP submission service are you using?
I'm not sure of the relevance of this, because as I have shown, my local ISP's SMTP server accepts the email and tries to deliver it, but for completeness sake I'm using Thunderbird and submitting email to the SMTP service (port 25). > > Not a good idea, since you are composing email purportedly from the hosted > domain, but sending it from the ISP, so the hosted domain, this looks like > sender domain forgery. You should use an MUA configuration for sending > such email that uses the hosting provider's SMTP submission service > (assuming they have port 587 + TLS + SASL support). > > I guess I personally disagree as this is a very common setup. For example if you have a laptop, many people would configure their email clients' SMTP server to be the one for the local network that they are connected to at that point in time, however would be retrieving email from POP servers not necessarily for their immediately connected ISP. Obviously if the remote domain supports a secure SMTP submission service that accepts external connections then this isn't necessary, but unfortunately you might be very surprised to know how few really do. A lot of ISPs have instructions for email sending and retrieval just as I've described. I should mention, that the webhosting I'm using does actually provide a secure SMTP submission mechanism, but SOOOOO many spammers have domains on their service that their SMTP servers are blocked by EVERYONE :( I also should mention that this has been working for about a year, and only failed in the last week or so, almost certainly due to a change that they have made. But I do appreciate your input. Regards, Paul McGougan Senior Software Engineer Braintree Communications Pty Ltd -- This information together with any attachments is for the use of the intended recipient(s) only and may contain confidential and/or privileged information and is subject to copyright. If you have received this email in error please inform the sender as quickly as possible and delete this email and any copies of this information from your computer system network. If you are not the intended recipient of this email, you must not copy, distribute or take any action(s) that relies on this information. Any form of disclosure, modification, distribution and/or publication of this email is strictly prohibited.
