Re: Slow Access to SMTP is Causing Slow mail()
| From: | Manuel Lemos | Date: | Fri, 31 May 2002 01:47:43 +0000 |
| Subject: | Re: Slow Access to SMTP is Causing Slow mail() | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-100035@lists.php.net to get a copy of this message | ||
Hello,
On 05/30/2002 10:29 PM, Bruce Vander Werf wrote:
Hi, My calls to mail() take a very long time to resolve, so I did a little investigating. If I try to Telnet to port 25, it takes about 30 seconds for the SMTP server to respond. Telnet to port 23 on the same address resolves immediately, as does normal web access (using the same address so I don't believe DNS is the culprit. Besides, mail() is slow, and that is accessing the SMTP server locally. What would be taking SMTP so long to respond? Any configuration parameters I need to look at?Maybe reverse DNS resolution of the client machine IP and anti-spam blackhole verification. -- Regards, Manuel Lemos