BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  How to request delivery notification using TIdSMTP ?          BorlandTalk.com Forum Index -> Delphi Internet Winsock View previous topic :: View next topic   Author Message wilson Guest Posted: Tue Sep 26, 2006 8:11 am    Post subject: How to request delivery notification using TIdSMTP ? How to request delivery notification using TIdSMTP ? This can be done with SMTP command, e.g. RCPT TO: abc (AT) example (DOT) com NOTIFY=SUCCESS,FAILURE but I don't know how to do this with TIdSMTP. Thank you. Back to top Remy Lebeau (TeamB) Guest Posted: Tue Sep 26, 2006 2:45 pm    Post subject: Re: How to request delivery notification using TIdSMTP ? "wilson" <e (AT) mail (DOT) com> wrote in message news:4518c9d8$1 (AT) newsgroups (DOT) borland.com... Quote: How to request delivery notification using TIdSMTP ? You don't. Quote: This can be done with SMTP command, e.g. RCPT TO: abc (AT) example (DOT) com NOTIFY=SUCCESS,FAILURE Only on servers that implement RFC 1891 ("SMTP Service Extension for Delivery Status Notifications"), which is indicated by the keyword "DSN" being present in the reply to the EHLO command. Indy does not implement DSN support at this time. Quote: I don't know how to do this with TIdSMTP. In order to use DSN, you would have to either 1) alter TIdSMTP's source code, or 2) implement the SMTP protocol from scratch yourself. Gambit Back to top Bill Edwards Guest Posted: Tue Sep 26, 2006 7:48 pm    Post subject: Re: How to request delivery notification using TIdSMTP ? Perhaps the "ReceiptRecipient" property of TIdMessage will serve the purpose? "wilson" <e (AT) mail (DOT) com> wrote in message news:4518c9d8$1 (AT) newsgroups (DOT) borland.com... Quote: How to request delivery notification using TIdSMTP ? This can be done with SMTP command, e.g. RCPT TO: abc (AT) example (DOT) com NOTIFY=SUCCESS,FAILURE but I don't know how to do this with TIdSMTP. Thank you. Back to top Remy Lebeau (TeamB) Guest Posted: Tue Sep 26, 2006 10:13 pm    Post subject: Re: How to request delivery notification using TIdSMTP ? "Bill Edwards" <sdbgrump (AT) hotmail (DOT) com> wrote in message news:45193da3$1 (AT) newsgroups (DOT) borland.com... Quote: Perhaps the "ReceiptRecipient" property of TIdMessage will serve the purpose? That property fills in the "Disposition-Notification-To" header of the message itself. It is not an SMTP-specific value. Not all servers recognize those types of headers. And besides that, those that do tend to use that particular header for read receipts, not delivery receipts. Gambit Back to top Massuda Guest Posted: Wed Sep 27, 2006 2:25 am    Post subject: Re: How to request delivery notification using TIdSMTP ? Quote: That property fills in the "Disposition-Notification-To" header of the message itself. Can I use the header "Return-Receipt-To" for this purpose (delivery notification)? --- posted by geoForum on http://delphi.newswhat.com Back to top Remy Lebeau (TeamB) Guest Posted: Wed Sep 27, 2006 2:41 am    Post subject: Re: How to request delivery notification using TIdSMTP ? "Massuda" <massuda (AT) mailinator (DOT) com> wrote in message news:45198ef5$3 (AT) newsgroups (DOT) borland.com... Quote: Can I use the header "Return-Receipt-To" for this purpose (delivery notification)? That is entirely dependant on the particular server that is receiving the message. "Return-Receipt-To" is not a standard header, and it is not specifically a delivery notification header either. Many servers do not use it as a delivery notification. If they use it at all, it is used as a read notification instead. Some servers do not use it at all. Gambit Back to top wilson Guest Posted: Wed Sep 27, 2006 8:11 am    Post subject: Re: How to request delivery notification using TIdSMTP ? Thank you very much for the information. Remy Lebeau (TeamB) wrote: Quote: "wilson" <e (AT) mail (DOT) com> wrote in message news:4518c9d8$1 (AT) newsgroups (DOT) borland.com... How to request delivery notification using TIdSMTP ? You don't. This can be done with SMTP command, e.g. RCPT TO: abc (AT) example (DOT) com NOTIFY=SUCCESS,FAILURE Only on servers that implement RFC 1891 ("SMTP Service Extension for Delivery Status Notifications"), which is indicated by the keyword "DSN" being present in the reply to the EHLO command. Indy does not implement DSN support at this time. I don't know how to do this with TIdSMTP. In order to use DSN, you would have to either 1) alter TIdSMTP's source code, or 2) implement the SMTP protocol from scratch yourself. Gambit -- Back to top wilson Guest Posted: Wed Sep 27, 2006 8:11 am    Post subject: Re: How to request delivery notification using TIdSMTP ? Yes. It is not reliable to request delivery notification by message header as this is not a standard approach and client/recipient dependent. With number of trials, using SMTP "RCPT TO:" command is more reasonable. Remy Lebeau (TeamB) wrote: Quote: "Massuda" <massuda (AT) mailinator (DOT) com> wrote in message news:45198ef5$3 (AT) newsgroups (DOT) borland.com... Can I use the header "Return-Receipt-To" for this purpose (delivery notification)? That is entirely dependant on the particular server that is receiving the message. "Return-Receipt-To" is not a standard header, and it is not specifically a delivery notification header either. Many servers do not use it as a delivery notification. If they use it at all, it is used as a read notification instead. Some servers do not use it at all. 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