Hi all,
I having a problem with my sendmail server running on centos 5.7 x64. Sometimes when we send an email to microsoft exchange servers, sendmail says deferred or timeout. I do not know what is happening. Here is some details;
[root@avgw ~]# sendmail -v -qRxxx@xxx.gov.qa
Running /var/spool/mqueue/q0B7caw9023076 (sequence 1 of 2) xxx@xxx.gov.qa... Connecting to smtp.xxx.gov.qa. via esmtp... 220 mail.xxx.gov.qa Microsoft ESMTP MAIL Service ready at Fri, 13 Jan 2012 16:37:28 +0300
EHLO avgw.yyy.com
250-mail.xxx.gov.qa Hello [95.9.x.x] 250-SIZE 10485760 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-AUTH 250-8BITMIME 250-BINARYMIME 250 CHUNKING
MAIL From:xxx@yyy.com SIZE=939155
250 2.1.0 Sender OK
RCPT To:xxx@xxx.gov.qa DATA
250 2.1.5 Recipient OK 354 Start mail input; end with <CRLF>.<CRLF> timeout writing message to smtp2.xxx.gov.qa.: Connection reset by smtp2.xxx.gov.qa. xxx@xxx.gov.qa... Deferred
[root@avgw ~]# telnet smtp2.xxx.gov.qa 25 Trying 89.211.40.246... Connected to smtp2.xxx.gov.qa (89.211.x.x). Escape character is '^]'. 220 mail.xxx.gov.qa Microsoft ESMTP MAIL Service ready at Fri, 13 Jan 2012 17:54:56 +0300
It seems everything is ok but i do not know what is the problem with exchange communication. Has anybody experienced this issue?
Regards