Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Wietse Venema wrote: Seth Mattinen: Multiline responses in SMTP are (as far as I know) not allowed. I'm sure Wietse will correct me it I'm wrong, but I can't ever recall it. They are allowed. In fact, most EHLO server responses are multi-line. Ah yes, silly me. I've seen multiline EHLO,

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Multiline responses in SMTP are (as far as I know) not allowed. I'm sure Wietse will correct me it I'm wrong, but I can't ever recall it. ~Seth

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Seth Mattinen: Multiline responses in SMTP are (as far as I know) not allowed. I'm sure Wietse will correct me it I'm wrong, but I can't ever recall it. They are allowed. In fact, most EHLO server responses are multi-line. Wietse

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Robin Whittle: http://tools.ietf.org/html/rfc3464#section-2.3.6 diagnostic-code-field = Diagnostic-Code : diagnostic-type ; *text Since the Status code will sometimes be less precise than the actual transport diagnostic code, the Diagnostic-Code field is provided

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Hi Wietse, You wrote: What benefits could there be to Postfix's reformatting of the diagnostic information? For security reasons Postfix never presents error messages and responses as is especially when information does not have a known-to-be trusted origin. Instead, Postfix removes

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Robin Whittle: I am not sure whether this is specified in an RFC, but I understand that for every part of the remote MTA's response which starts with 544- there should be a new line in the message to the sender. Error reports are standardized in 346[1-4]. I invite you to point out the

Re: Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Hi Wietse, Thanks for your reply: I am not sure whether this is specified in an RFC, but I understand that for every part of the remote MTA's response which starts with 544- there should be a new line in the message to the sender. Error reports are standardized in 346[1-4]. I invite you to

Formatting of 544- ... lines in Undelivered Mail Returned to Sender

Thanks, as always, for Postfix! I have been using it for at least ten years what I describe below is the first time I have questioned how well it works. This is version 2.3.3 on CentOS 5.1. When Postfix (or any other MTA) attempts to send a message to another MTA, and that remote MTA rejects