On 2/6/2013 2:26 PM, Daniel L. Miller wrote: > I've been using recipient verification for some time with good > results but I think I need to make an adjustment to accommodate the > changing email world. It appears a number of servers have adopted > minimal greylisting - such that they immediately reject initial > contacts but have a minimal timeout (just a few seconds) before > accepting.
Recipient verification is intended for your own recipients, such as a mail gateway in front of a downstream internal mailstore. If you're doing recipient verification on outgoing mail, please don't. > > At the moment, my client behavior (Thunderbird) on a send is to show > processing...for an extended period. However, if after sending - > and seeing the apparent timeout condition - the user cancels the > send and then manually retries it immediately goes out. Still trying to figure out how that relates to postfix... > So my > belief is my Postfix server is performing one or more verification > attempts within the remote greylisting servers block - and is then > waiting for responses. > > How can I set Postfix to make an initial attempt, not wait longer > than 2 seconds for a response, and then make another perhaps 5 or 10 > seconds later? Apparently you're having some kind of problem with recipient verification. Maybe if you describe the problem rather than a proposed solution, we can help. Along wiht your description, please include logs demonstrating the problem and your "postconf -n" output. http://www.postfix.org/DEBUG_README.html#mail -- Noel Jones
