我尝试了 10 封托管在 Google、Yahoo!、GoDaddy 和一些私人托管的不同电子邮件，每次都收到以下错误。我已阻止敏感信息，但您将能够看到错误。
Feb 16 17:06:50 xxxxx sendmail[31824]: o1GM6ovJ031824: to=jxxxxxd@att.net, ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30054, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o1GM6oJo031825 Message accepted for delivery)
Feb 16 16:54:19 xxxxx sendmail[31625]: o1GLsJPP031625: to=jeremy@hxxxxxc.com, ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30097, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o1GLsJah031626 Message accepted for delivery)
Feb 17 09:05:52 xxxxx sm-mta[10620]: o1H6Z3jM005734: to=<jeremy@hxxxxxc.com>, ctladdr=<www-data@xxxxx.corenetworks.net> (33/33), delay=07:30:49, xdelay=01:15:36, mailer=esmtp, pri=571331, relay=aspmx3.googlemail.com. [209.85.222.4], dsn=4.0.0, stat=Deferred: Connection timed out with aspmx3.googlemail.com.
Feb 17 10:35:23 xxxxx sm-mta[12828]: o1HEZwn8011833: to=<jxxxxxd@att.net>, ctladdr=<www-data@xxxxx.corenetworks.net> (33/33), delay=00:59:25, xdelay=00:12:36, mailer=esmtp, pri=300353, relay=aln-mailrelay.att.net. [12.102.252.75], dsn=4.0.0, stat=Deferred: Connection timed out with aln-mailrelay.att.net.
如果您看一下，它们都会发送，但是（几小时后）我收到错误“stat = Deferred：Connection timed out with {server}”。我束手无策，因为我在每台服务器上都使用相同的设置，而且它们都可以工作。
