On Wed, 09 Oct 2013 12:14:40 +0200 berenger.mo...@neutralite.org wrote: > > > By relay host, you mean the server from which I am sending this mail > ( through a web interface )? If so, yes, I only want to discuss with > it, except if there is some advantage ( for me or that server ) to > directly send mails to their final server. > > The main advantage, for me at least, of sending email directly to the destination is that my MTA has a record of its transaction with the receiving SMTP server. These days, email can disappear without trace if it is identified as spam, or can be refused for various reasons. The transaction records can help identify where and why it disappeared or bounced. Persuading the admin of a smarthost (relay host) to send you log entries can be difficult or impossible.
A further advantage is that an additional point of failure is added by sending mail via a smarthost. This is, of course, only an advantage if your MTA is more reliable than the smarthost, and mine is certainly more reliable than my ISP's system. The big problem about sending email direct is that you have to be respectable, at least as far as other mail servers are concerned. That means having a static IP address with a complementary public DNS A-PTR record pair for that address. Without those, most mail servers will not accept mail from you. My server certainly won't. You also need an ISP which wants to keep its IP ranges off email blacklists, which means taking quick and firm action against spam sent by its own customers. For the most part, customers using static addresses are businesses, which are usually better protected than home users against being hijacked by spammers. If you are mobile, you must use a smarthost, and one that will accept connections from outside its own network, using authentication. Or you can run your own smarthost at home or on a hosted server, and connect to it over ssh or VPN. -- Joe -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20131009214930.6739d...@jretrading.com
