Hi. one of our machines has a problem with outgoing mails getting blocked by our mail gateway. The local MTA logs the error as follows (I mystified host and mail addresses): — 2015-10-26 11:11:22 1ZpBkJ-0002B9-FL SMTP timeout while connected to our.mailgateway.local [10.255.252.92] after sending data block (16378 bytes written): Connection timed out 2015-10-26 11:11:22 1ZpBkJ-0002B9-FL == r...@domain.cxm<mailto:r...@domain.cxm> <r...@domain.cxm<mailto:r...@domain.cxm>> R=smarthost T=remote_smtp_smarthost defer (110): Connection timed out: SMTP timeout while connected to our.mailgateway.local [10.255.252.92] after sending data block (16378 bytes written) —
Logging on the gateway shows more detail: — Sep 18 10:32:07 nefw1 %ASA-4-108004: ESMTP Classification: Dropped connection for ESMTP Request from ProvDMZ:10.255.250.13/56134 to coresw_3_4:10.255.252.92/25; matched Class 4: header line length gt 998 — A quick view on the message headers showed that indeed all of them have a „References“ line with more than 1100 characters, which is, according to RFC 822<http://www.faqs.org/rfcs/rfc822.html> way too much: — There are two limits that this specification places on the number of characters in a line. Each line of characters MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF. — So my question is: * Is this a bug that only affects version 3.1.3 (and smaller)? * If not: How does OTRS create these lines? Is it a default Perl module that handles the mail header lines? Regards — Jan Dreyer IT Administrator — Operations — A-SCM-IT IOX Expert ________________________________ This email may contain confidential and/or privileged information. If you are not the intended recipient (or have received this email in error) please notify the sender immediately and destroy this email. Any unauthorized copying, disclosure or distribution of the information in this email is strictly forbidden.
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