OS X 10.4 Server SMTP Server timeout I just set up my server today with one of my new static IP addresses to act as a mail and web server. The web server is working fine, and the mail server is working fine to receive mail, but I am unable to send any mail except to my own domain. I've looked in the SMTP log and it is filled with entries like this:  Oct  3 21:36:02 osxserver postfix/smtp[17767]: connect to mx3.hotmail.com[65.55.92.136]: Operation timed out (port 25) Oct  3 21:36:13 osxserver postfix/smtp[17965]: connect to mx1.icloud.com.akadns.net[17.172.34.10]: Operation timed out (port 25) Oct  3 21:36:32 osxserver postfix/smtp[17767]: connect to mx1.hotmail.com[65.55.37.72]: Operation timed out (port 25) Oct  3 21:36:43 osxserver postfix/smtp[17965]: connect to mx3.icloud.com.akadns.net[17.172.34.64]: Operation timed out (port 25) Oct  3 21:37:02 osxserver postfix/smtp[17767]: connect to mx3.hotmail.com[65.55.92.168]: Operation timed out (port 25) Oct  3 21:37:13 osxserver postfix/smtp[17965]: connect to mx3.icloud.com.akadns.net[17.172.34.65]: Operation timed out (port 25) Oct  3 21:37:32 osxserver postfix/smtp[17767]: connect to mx1.hotmail.com[65.54.188.72]: Operation timed out (port 25) Oct  3 21:37:43 osxserver postfix/smtp[17965]: connect to mx4.icloud.com.akadns.net[17.172.34.66]: Operation timed out (port 25) Oct  3 21:38:02 osxserver postfix/smtp[17767]: connect to mx3.hotmail.com[65.55.92.184]: Operation timed out (port 25) Oct  3 21:38:13 osxserver postfix/smtp[17965]: connect to mx6.icloud.com.akadns.net[17.172.34.70]: Operation timed out (port 25) Oct  3 21:38:32 osxserver postfix/smtp[17767]: connect to mx4.hotmail.com[65.55.92.184]: Operation timed out (port 25) Oct  3 21:38:43 osxserver postfix/smtp[17965]: connect to mx2.icloud.com.akadns.net[17.172.34.12]: Operation timed out (port 25) Oct  3 21:39:02 osxserver postfix/smtp[17767]: connect to mx2.hotmail.com[65.54.188.126]: Operation timed out (port 25) Oct  3 21:39:13 osxserver postfix/smtp[17965]: connect to mx2.icloud.com.akadns.net[17.172.34.11]: Operation timed out (port 25) Oct  3 21:39:32 osxserver postfix/smtp[17767]: connect to mx4.hotmail.com[65.54.188.126]: Operation timed out (port 25) Oct  3 21:39:43 osxserver postfix/smtp[17965]: connect to mx1.icloud.com.akadns.net[17.172.34.9]: Operation timed out (port 25) Oct  3 21:40:02 osxserver postfix/smtp[17767]: connect to mx4.hotmail.com[65.55.92.168]: Operation timed out (port 25) Oct  3 21:40:13 osxserver postfix/smtp[17965]: connect to mx5.icloud.com.akadns.net[17.172.34.68]: Operation timed out (port 25) Oct  3 21:40:13 osxserver postfix/smtp[17965]: 449966C1EC: to=&lt;jehamlett@icloud.com&gt;, relay=none, delay=39809, status=deferred (connect to mx5.icloud.com.akadns.net[17.172.34.68]: Operation timed out)   Any recommendations on how I can fix this so that I can send mail? My server is running OS X Server 10.4.11 and my ISP is AT&amp;T u-verse business class.
ISP blocking port 25 My ISP has started blocking port 25 so I can not send email through my dedicated server any more.   I have several options:   Send email through the SMTP server provided by my ISP. Any problems with this? Setup mu server so that it receives email on another port instead of port 25     No one else sends email through my server so it should be OK. How do I do this on a Linux server? Buy a static client IP - these are not being blocked so far.   Which one is preferable?
Tag badges are re-awarded for some users biblatex broken overnight As late as last week my setup for biblatex worked fine. Going back to the same project today not even a minimal file compiles:  \documentclass{article}   \usepackage{biblatex} %\addbibresource{biblatex-examples.bib}   \begin{document}  test%foo\nocite{*}    %\printbibliography  \end{document}   but breaks off with   /usr/local/texlive/2017/texmf-dist/tex/latex/biblatex/biblatex.sty:3776: LaTeX  Error: Missing \begin{document}.  See the LaTeX manual or LaTeX Companion for explanation. Type  H &lt;return&gt;  for immediate help.  ...                                                l.3776   australian,newzealand} ?  /usr/local/texlive/2017/texmf-dist/tex/latex/biblatex/biblatex.sty:3776: Math f ormula deleted: Insufficient symbol fonts. \expandafter -&gt;american|  l.3776   australian,newzealand}   And keeps repeating the last one until    (That makes 100 errors; please try again.)   when I ignore it.  Files without biblatex work as expected.  Using tlmgr to go my two backup versions of biblatex back in time to 1st Jan I still get the same errors.  Could this be another update from the last week or so that causes this?  If I swich back to TL 16 things work as expected. (For my work I need TL 17 because of packages.) What does the "Alternative Character Sheet" mean when it asks you for the "Maximum Hit Dice" and the "Remaining Hit Dice"? I am trying to fill in the "Alternative Character Sheet" (one of the ). It asks me for my "Maximum Hit Dice" and the "Remaining Hit Dice". What do these terms mean? Can we decrypt in this order when the message is encrypted twice? siunitx uses math mode for symbols - workaround needed when using different fonts for math and text This is a follow up question from . The original problem has been solved using siunitx instead of dcolumn. However, the problem is that I am using mathpazo with osf as my main body font and eulervm as my math font. With siunitx used to decimal align tables this results in []() symbols being drawn in the math font, but the digits being drawn in the text font, as the following MWE example illustrates.  Is it possible to draw the symbols in the normal text font or redefine the mathfont for S columns completely?  \documentclass{scrartcl} \usepackage{booktabs} \usepackage[osf]{mathpazo} \usepackage[euler-digits]{eulervm}  % For Tables created by estout \newcommand{\sym}[1]{\ensuremath{^{#1}}} % for symbols in Table \usepackage{siunitx} \sisetup{ detect-mode,            group-digits            = false ,           input-signs             = ,           input-symbols           = ()[]-+ ,           input-open-uncertainty  = ,           input-close-uncertainty = ,           table-align-text-post   = false          } \begin{document} \begin{tabular*}{\textwidth}{     l @{\extracolsep\fill} *{2}{S[table-format=4.4]} @{}} \toprule \multicolumn{1}{@{}l}{\emph{Age}}  \\[0.5ex] 18--24 &amp;   [-1360.228]\sym{*}  &amp;  -1371.941\sym{*}  \\        &amp;       (6.915)         &amp;    (-7.953)        \\ 25--34 &amp;     -219.216          &amp;   -240.271         \\        &amp;     (514.894)         &amp;   (515.348)        \\ 35--44 &amp;     -310.715          &amp;   -311.438         \\        &amp;     (485.780)         &amp;   (486.013)        \\ 55$+$  &amp;       -5.135          &amp;     [2.656]        \\        &amp;      (53.267)         &amp;   (533.875)        \\ \bottomrule \end{tabular*} \end{document}   Edit: Thanks to David the problem has been solved including a fix for amsmath and extending to XeTeX. On a side note, the command for * generated by estoutshould now be simply plain text:  \newcommand{\sym}{#1} % for symbols in Table  \newcommand{\sym}[1]{\rlap{$#1$}} % Thanks to David Carlise again. Capitalization of names that begin lowercased, at the beginning of a sentence Suppose $f$ and $g$ are continuously differentiable functions such that $f(x) = g'(x)$ and $g(x) = f'(x)$ and that any product of $f, f', g$ and $g'$ is commutative for all $x ∈ R$. Show that $ f^2 − g^2 = C $ for some real constant C  I have actually no clue how to solve this, and would be really greatfull for all the help i can get I was given a laptop with a totally dead display. I do not want to pay to replace the broken display, but I would like to use the laptop as a server and connect to it via SSH to control it.  I have pulled out the internal hard drive from the broken laptop, and I want to install Debian GNU/Linux and the SSH server onto this HDD using a working Debian laptop.  However, the hardware in the two laptops is very different, and I am wondering what kind of problems I would run into when I plugged the drive back in to the laptop with the broken display because of this?  How would I make this work? What is the proper way for me to install a bootable copy of Linux onto a HDD that will be used by a computer with different hardware? Is "The empty set is a subset of any set" a convention? Recently I learned that for any set A, we have $\varnothing\subset A$.  I found some explanation of why it holds.     $\varnothing\subset A$ means "for every object $x$, if $x$ belongs to the empty set, then $x$ also belongs to the set A". This is a vacuous truth, because the antecedent ($x$ belongs to the empty set) could never be true, so the conclusion always holds ($x$ also belongs to the set A). So $\varnothing\subset A$ holds.   What confused me was that, the following expression was also a vacuous truth.     For every object  $x$, if $x$ belongs to the empty set, then $x$ doesn't belong to the set A.   According to the definition of the vacuous truth, the conclusion ($x$ doesn't belong to the set A) holds, so $\varnothing\not\subset A$ would be true, too.  Which one is correct? Or is it just a convention to let $\varnothing\subset A$? "Accountsd wants to use the 'iCloud' keychain" I, too, am suddenly getting this message.  I don't see a Keychain First Aid option in Keychain, and the two Login Keychain Settings were already unlocked.  Any other ideas for what the error message is all about, and what I should do about it? How do I create a deb package for a single python script? I have a single python script that I want to distribute as a deb package. It is a  which shows local date in Unity panel. I did follow  but I could not create a deb package because it fails.   Can someone give me a step-by-step instruction on what I should do? As far as I know this script depends on python-appindicator.   NOTE: I do not want any links to Debian/Ubuntu packaging instructions. I have seen most of them. I don't find them beginner friendly. Why won't my follower, Serana, follow me? I told my follower (Serana) to wait. But this is different. I told her to go somewhere and wait so it will activate the enemies. Well it did and I killed them. But Serana seems to be not following me anymore. I can't tell her to follow me. And she is constantly in a squatting position. The only thing I can do is tell her to wait somewhere else to move her. And I can't part ways because I'm doing a main quest and she has to be there. Can anybody give me a tip on what to do? Deploy Community Builder audience page assignments with ant migration tool? How to get the current time in Python Why doesn't PHP DOM include slash on self closing tags? Why do I have two docks in Ubuntu desktop (with GNOME 3) after installing Dash to Dock? Is there an optimal loss function for dealing with imbalanced classes? I'm aware that there are many ways of dealing with datasets where there is a strong class imbalance in the target variable: downsampling the more prevalent and less important class, over-weighting the valuable minority class, etc. Are there any loss functions that are ideally suited for these types of problems? I've heard of AUC, but AUC sounds like a means of evaluating a model once its training is complete (correct me if I'm wrong). Log loss and squared loss penalize a model's over confidence, but overconfidence and class imbalance seem unrelated. Is that true? When I try to upload an image, I'm presented with the following dialog box,    The dialog box does not allow uploading either from my computer or by posting a link.  This happens only on Chrome browser (running on Windows). Clearing cache and cookies, and restarting computer do not resolve.  Is this just my computer? Or is this a site-wide bug?  Additional info:  Clicking on 'click' to upload does nothing. Dragging an image onto dialog redirects me to the file location on my computer. Clicking 'Add picture' redirects me to http://[SE-domain].com/upload/image?https=true.  UPDATE: A Norton extension for Chrome was the source of the problem. Can "Mr", "Mrs", etc. be used with a first name? When will my device get the Android 5.0 update (Lollipop)?