There's indeed a maximum line length specified in the SMTP protocol. Quoted from RFC 821 Page 42: " The maximum total length of a text line including the <CRLF> is 1000 characters (but not counting the leading dot duplicated for transparency)."
But looking at the code I found also that if a line exeeds 1023 characters an exeption is raised, bad! This fix is for both V6 OverbyteIcsSmtpProt.pas as well as for v5 SmtpProt.pas procedure TCustomSmtpClient.DataNext; var MsgLine : array [0..1023] of char; begin [..] Inc(FItemCount); if FItemCount < FHdrLines.Count then begin { There are still header lines to send } <= // StrPCopy(@MsgLine, FHdrLines.Strings[FItemCount]); {AG 11/10/06} => StrLCopy(@MsgLine, PChar(FHdrLines.Strings[FItemCount]), SizeOf(MsgLine) - 1); {AG 11/10/06} [..] You should turn on property FoldHeaders in order to keep the line length within the range of maximum suggested length, that is only 75 characters. --- Arno Garrels [TeamICS] http://www.overbyte.be/eng/overbyte/teamics.html Jody Bowman wrote: > Greetings, > > I'm an engineer from the Milwaukee, Wisconsin (USA) > area and was looking at using the ICS SMTP control for an email > application I'm working on. It looks to satisfy the project > requirements except for one oddity. If I include more than 1018 > characters worth of email addresses in the To: line (which can happen > in my app), the letter is sent successfully to all recipients but the > email header information appears in the body of the email. I checked > the SMTP protocol (http://www.ietf.org/rfc/rfc0821.txt) and I'm well > within the limit of 100 recipients. If there is an item that says > doing this is invalid I haven't been able to find it. > Would you know if this is a limitation of SMTP, or something I > might be implementing wrong, or a limitation of the control? > An example of what one of these letters looks like is included at > the bottom of this message. I repeatedly used my own address for the > example. > Thanks in advance for any help, > > Jody Bowman > Finishing Controls System Engineering > > QuadTech > A Subsidiary of Quad/Graphics > > Sussex, Wisconsin USA > +1 414 566 7721 tel > +1 414 566 4010/7721 pager/PIN > [EMAIL PROTECTED] > www.quadtechworld.com > > > To: > [EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL PROTECTED];[EMAIL > PROTECTED];[EMAIL PROTECTED] > om;[EMAIL PROTECTED] > Subject: Testing > Sender: [EMAIL PROTECTED] > Mime-Version: 1.0 > Content-Type: text/plain; charset="iso-8859-1" > Date: Thu, 9 Nov 2006 15:31:07 -0600 > Message-ID: <[EMAIL PROTECTED]> > X-Mailer: ICS SMTP Component V2.50 > Return-Path: [EMAIL PROTECTED] > X-OriginalArrivalTime: 09 Nov 2006 21:31:07.0118 (UTC) > FILETIME=[5DCB60E0:01C70446] > X-TM-AS-Product-Ver: SMEX-7.0.0.1499-3.6.1039-14804.000 > X-TM-AS-Result: No-1.298500-0.000000-31 > > This is the first line > Then the second one > The next one is empty > > The next one has only a single dot > . > Finally the last one > > > > > --------------------------------- > Access over 1 million songs - Yahoo! Music Unlimited. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be