qmail Multiple MX Problem
Hi all I have this problem delivering mail to certain hosts that have multiple MX entries. Other than that everything is working fine. Let me explain the scenario more. I have mail being sent to some user at server A and server B. Server A and B have 3 MX entries in their lookup. The first two entries in these are higher in preference but are unavailable to the net traffic (for some reason ). What i think is happening is that qmail is trying to connect to the first MX entry and for some reason the server sends SMTP serrvice not available to qmail at my end. So the mail is put in queue and then qmail retries the first server in MX entry. I have found a work-around in the sense that i entered smtproute individually for thse two servers A and B. It is working now, but i was wondering if anyone had more insight on why qmail was not looking up the other 3 mx records. Thanks in advance all, Saleem __ Do You Yahoo!? Spot the hottest trends in music, movies, and more. http://buzz.yahoo.com/
Re: qmail Multiple MX Problem
On Mon, Jun 18, 2001 at 10:03:20AM -0700, mjt mjt wrote: Hi all I have this problem delivering mail to certain hosts that have multiple MX entries. Other than that everything is working fine. Let me explain the scenario more. I have mail being sent to some user at server A and server B. Server A and B have 3 MX entries in their lookup. The first two entries in these are higher in preference but are unavailable to the net traffic (for some reason ). What i think is happening is that qmail is trying to connect to the first MX entry and for some reason the server sends SMTP serrvice not available to qmail at my end. So the mail is put in queue and then qmail retries the first server in MX entry. If the recieving server answers on SMTP, AFAIK qmail is _obligated_ to talk to it -- if it cannot accept mail, it should not accept connections. Whether or not this is a requirement, this is the way qmail behaves. The recieving servers are being silly -- if you're too busy to accept connections, why open a connection to say so?? I have found a work-around in the sense that i entered smtproute individually for thse two servers A and B. It is working now, but i was wondering if anyone had more insight on why qmail was not looking up the other 3 mx records. See above -- qmail is looking up all three, and talking to the best preference. What is the receiving MTA for this domain? I'd like to know for future reference -- it's behaving quite badly... -- Greg White
Re: qmail Multiple MX Problem
On Mon, Jun 18, 2001 at 10:03:20AM -0700, mjt mjt wrote: I have mail being sent to some user at server A and server B. Server A and B have 3 MX entries in their lookup. The first two entries in these are higher in preference but are unavailable to the net traffic (for some reason ). What i think is happening is that qmail is trying to connect to the first MX entry and for some reason the server sends SMTP serrvice not available to qmail at my end. So the mail is put in queue and then qmail retries the first server in MX entry. If a connection to the SMTP port is made but the transaction cannot be completed, qmail won't try lower preference mail exchangers. It'll only try them if it can't connect at all. Chris PGP signature
